Solid Carbide - Vargus

Solid Carbide 

Thread Milling Tools 

Threading Solutions 

Inch

A Complete Range of 

Solid Carbide Thread Milling Solutions! 

Helicool 

Helical Flutes With Thru-Hole Coolant 

Helicool 

HeliCool-R (HCR) 

HeliCool-C (HCC) 

HTC (Thriller) 

NEW! 

Axial coolant-thru 

Ideal for blind holes 

Radial coolant for Axial coolant-thru 

effective chip 

Thread and Chamfer 

evacuation in 

in one tool! 

thru-holes 

page 5 page 12 page 13page 14 

He-Lex 

Helical flutes 

Drill, Thread and 

Chamfer in one tool! 

Deep Threading 

Straight Flutes For Deep Holes 

Economical tool for 

thru-holes 

Long reaching 

up to 3xDo 

page 15 page 17 

2

MilliPro 

Miniature Thread Mills 

MilliPro 

MilliPro HD 

NEW! 

Straight 

Straight Flutes 

Minimum Thread 

M1.6x0.35 

No.1-72UN 

Specially designed 

for hard materials 

up to 62 HRc 

Very economical 

tool for light jobs 

and soft materials 

page 18 page 20 page 22 

Technical Information 

Cutting Data 

page 28 

TM Gen Software 

for tool selection and CNC programming 

page 31 

3

Vardex Ordering Code System 

TM Solid Carbide 

HC 

19 

141 

L03 

- 

I 

24 

UNC 

TM 

VTH 

1 

2 

3 

4 

5 

6 

7 

8 

9 

10 

11 

1 - Line 

2 - No. of Teeth 

3 - Shank Dia. 

4 - Cutting Dia. 

5 - Tool Cutting Length 

6 - Type of Tool 

HC - HeliCool 

HCR - HeliCool R 

HCC - HeliCool C 

HX - He-Lex 

S - Straight Flutes 

D - Deep Threading 

or MilliPro 

1T - 1 Tooth 

(Deep Threading) 

3T - 3 Teeth 

(MilliPro) 

2L - 2 Teeth LH 

(MilliPro HD) 

1/8” - 12 

3/16” - 19 

1/4” - 25 

5/16” - 31 

3/8” - 37 

1/2” - 50 

5/8” - 63 

3/4” - 75 

.047” - .746” 

Up to 3Do 

E - External 

I - Internal 

EI - External + Internal 

7 - Pitch 

8 - Standard 

9 - System 

10 - No. of Flutes 

11 - Carbide Grade 

Full Profile - Pitch Range 

mm 

tpi 

0.35 - 6.0 72 - 4.5 

ISO - ISO Metric 

UN - American UN 

UNC - UN Coarse 

UNF - UN Fine 

UNEF - UN Extra Fine 

BSW - Whit. Coarse 

BSP - BSP 

BSF - Whit. Fine 

BSPT - BSPT 

NPT - NPT 

NPTF - NPTF 

PG - PG 

TM 

3 - 3 Flutes 

5 - 5 Flutes 

Straight Flute, when 

two options are 

available 

VTS 

VTH 

HTC - Thriller 

HTC 

M6 

1.0 

2D 

VTN 

1 

2 

3 

4 

5 

1 - Line 

2 - Thread Diameter 

3 - Pitch 

4 - Thread Length 

5 - Carbide Grade 

HTC - Thriller 

M6 - M12 

1 - 1.75mm 

2D 

2.5D 

VTN 

VTS 

4

Helicool 

American UN 

Internal 

L1 

L 

D2 

1/4P 

Internal 

60° 

Le 

D 

h 

1/8P 

External 

Defined by: ANSI B1.1.74 

Tolerance class: 2B 

Le 

L1 

D2 

Helical Flutes with Thru-Hole Coolant 1.5 x D0 (L1 < 1.5 x Thread Diameter) 

No. of 

Thread Pitch Ordering Code EDP No. Dimensions inch 

Teeth 

Flutes 

Bore Dia.* 

UNC UNF UNEF 

tpi Internal 

VTH D D2L Le L1 

No.10-24 

No.12-24 

1/4"x20 

5/16"x18 

3/8"x16 

7/16"x14 

1/2"x13 

9/16"x12 

5/16" ;3/8"x24 

5/16" ;3/8"x24 

7/16" ;1/2"x20 

9/16" ;5/8"x18 

3/4"x16 

7/8"x14 

1"-1 1/2"x12 

9/16"-11/16"x24 

9/16"-11/16"x24 

3/4"-1"x20 

11/16"-1 11/16"x18 

24 

24 

20 

18 

16 

14 

13 

12 

HC19141L03-I24UNC TM... 

HC25163L03-I24UNC TM... 

HC25192L03-I20UNC TM... 

HC31242L04-I18UNC TM... 

HC31301L05-I16UNC TM... 

HC37354L06-I14UNC TM... 

HC50407L08-I13UNC TM... 

HC50465L08-I12UNC TM... 

80360 

80361 

80362 

80363 

80364 

80365 

80366 

80367 

3/16 

1/4 

1/4 

5/16 

5/16 

3/8 

1/2 

1/2 

.141 

.163 

.192 

.242 

.301 

.354 

.407 

.465 

1.772 

2.244 

2.244 

2.402 

2.402 

2.874 

3.150 

3.150 

.292 .312 

.333 .354 

.350 .375 

.444 .472 

.563 .594 

.643 .678 

.769 .808 

.833 .875 

Z Zt inch 

3 7 .150 

3 8 .177 

3 7 .201 

3 8 .260 

3 9 .315 

3 9 .370 

4 10 .429 

4 10 .484 

*Bore Diameter applies to smallest thread Dia. Maximum thread length = L1 - 

Pitch 

4 

5

Helicool 

American UN 

Internal 

L1 

L 

D2 

1/4P 

Internal 

60° 

Le 

D 

h 

1/8P 

External 



Le 

L1 

D2 

Helical Flutes with Thru-Hole Coolant 

Thread 

Pitch 

UNC UNF 

UNEF tpi 

Ordering Code 

Internal 

EDP No. 

VTH 

No.10-24 

No.12-24 

1/4"x20 

5/16"x18 

3/8"x16 

7/16"x14 

1/2"x13 

9/16"x12 

5/8"x11 

3/4"x10 

7/8"x9 

1"x8 

No.10-32 

No.12; 1/4”x28 

1/4"x28 

5/16"; 3/8"x24 

5/16"; 3/8"x24 

5/16"; 3/8"x24 

3/8"x24 

7/16"; 1/2"x20 

7/16"; 1/2"x20 

1/2"x20 

9/16"; 5/8"x18 

9/16"; 5/8"x18 

5/8"x18 

3/4"x16 

3/4"x16 

7/8"x14 

7/8"x14 

1"-1 1/2"x12 

1"-1 1/2"x12 

No.12-3/8”x32 

No.12-3/8”x32 

7/16"; 1/2"x28 

7/16"; 1/2"x28 

7/16"; 1/2"x28 

9/16"-11/16"x24 

9/16"-11/16"x24 

9/16"-11/16"x24 

9/16"-11/16"x24 

9/16"-11/16"x24 

3/4"-1"x20 

3/4"-1"x20 

3/4"-1"x20 

3/4"-1"x20 

11/16"-1 11/16"x18 

11/16"-1 11/16"x18 

11/16"-1 11/16"x18 

32 

32 

28 

28 

28 

24 

24 

24 

24 

24 

20 

20 

20 

20 

18 

18 

18 

16 

16 

14 

14 

13 

12 

12 

11 

10 

9 

8 

HC19150L03-I32UNF TM... 

HC25173L04-I32UNEF TM... 

HC25169L04-I28UNF TM... 

HC25203L05-I28UNF TM... 


HC19141L04-I24UNC TM... 

HC25163L04-I24UNC TM... 

HC31263L06-I24UNF TM... 

HC37323L07-I24UNF TM... 


HC25192L05-I20UNC TM... 

HC37362L08-I20UNF TM... 

HC50437L10-I20UNF TM... 


HC31242L16-I18UNC TM... 

HC50492L11-I18UNF TM... 

HC63555L12-I18UNF TM... 

HC31301L07-I16UNC TM... 

HC75669L15-I16UNF TM... 

HC37354L08-I14UNC TM... 

HC75746L17-I14UNF TM... 

HC50407L10-I13UNC TM... 

HC50465L11-I12UNC TM... 

HC75746L20-I12UNF TM... 

HC63516L13-I11UNC TM... 

HC63622L15-I10UNC TM... 

HC75746L18-I9UNC TM... 

HC75746L20-I8UNC TM... 

80291 

80292 

80293 

80294 

80295 

80296 

80297 

80298 

80299 

80300 

80301 

80302 

80303 

80304 

80305 

80306 

80307 

80308 

80309 

80310 

80311 

80312 

80313 

80314 

80315 

80316 

80317 

80318 

D 

3/16 

1/4 

1/4 

1/4 

3/8 

3/16 

1/4 

5/16 

3/8 

1/2 

1/4 

3/8 

1/2 

3/4 

5/16 

1/2 

5/8 

5/16 

3/4 

3/8 

3/4 

1/2 

1/2 

3/4 

5/8 

5/8 

3/4 

3/4 

Dimensions inch 

D2 

.150 

.173 

.169 

.203 

.371 

.141 

.163 

.263 

.323 

.496 

.192 

.362 

.437 

.685 

.242 

.492 

.555 

.301 

.669 

.354 

.746 

.407 

.465 

.746 

.516 

.622 

.746 

.746 

2 x D0 (L1 < 2 x Thread Diameter) 

L 

1.772 

2.244 

2.244 

2.244 

2.874 

1.772 

2.244 

2.402 

2.874 

3.150 

2.244 

2.874 

3.150 

4.016 

2.402 

3.150 

3.622 

2.402 

4.016 

2.874 

4.016 

3.150 

3.150 

4.016 

3.622 

3.622 

4.016 

4.016 

Le 

.375 

.438 

.429 

.500 

.857 

.375 

.417 

.625 

.750 

1.125 

.500 

.850 

1.000 

1.500 

.611 

1.111 

1.222 

.750 

1.500 

.857 

1.714 

1.000 

1.084 

2.000 

1.273 

1.500 

1.778 

2.000 

L1 

.391 

.453 

.446 

.518 

.875 

.396 

.437 

.646 

.771 

1.145 

.525 

.875 

1.025 

1.525 

.639 

1.139 

1.250 

.781 

1.528 

.893 

1.750 

1.039 

1.125 

2.042 

1.318 

1.550 

1.833 

2.063 

No. of 

Flutes 

Z 

3 

3 

3 

3 

3 

3 

3 

3 

3 

4 

3 

3 

3 

4 

3 

4 

4 

3 

4 

3 

4 

4 

4 

4 

4 

4 

4 

4 

Teeth 

Zt 

12 

14 

12 

14 

24 

9 

10 

15 

18 

27 

10 

17 

20 

30 

11 

20 

22 

12 

24 

12 

24 

13 

13 

24 

14 

15 

16 

16 

Bore Dia.* 

inch 

.157 

.185 

.181 

.216 

.401 

.150 

.177 

.272 

.335 

.520 

.201 

.390 

.453 

.701 

.260 

.512 

.575 

.315 

.689 

.370 

.807 

.430 

.484 

.925 

.539 

.657 

.768 

.866 

6 *Bore Diameter applies to smallest thread Dia. Maximum thread length = L1 - 

Pitch 

4

Helicool 

ISO Metric 

Internal 

L1 

L 

D2 

1/4P 

Internal 

60º 

Le 

D 

1/8P 

External 

Defined by: R262 (DIN 13) 

Tolerance class: 6H 

Le 

L1 

D2 


Thread 

Pitch 

Ordering Code 

EDP No. 


M Coarse M Fine mm Internal 


M3x0.5 

M4x0.7 

M5x0.8 

M6X1.0 

M8x1.25 

M10x1.5 

M12X1.75 

M14x2.0 

M16x2.0 

M3.5-M16x0.5 

M8-M40x1.0 

M12-M48X1.5 

M17-M80x2.0 

M17-M80x2.0 

0.5 

0.7 

0.8 

1.0 

1.25 

1.5 

1.75 

2.0 

2.0 

HC19094L01-I0.50ISO TM... 

HC19124L02-I0.70ISO TM... 

HC19159L02-I0.80ISO TM... 

HC25189L03-I1.00ISO TM... 

HC31256L05-I1.25ISO TM... 

HC37323L06-I1.50ISO TM... 

HC37370L07-I1.75ISO TM... 

HC50457L08-I2.00ISO TM... 

HC63535L09-I2.00ISO TM... 

80337 

80355 

80356 

80343 

80357 

80346 

80358 

80351 

80353 

3/16 

3/16 

3/16 

1/4 

5/16 

3/8 

3/8 

1/2 

5/8 

.094 

.124 

.159 

.189 

.256 

.323 

.370 

.457 

.535 

1.772 

1.772 

2.244 

2.244 

2.402 

2.874 

2.874 

2.874 

3.622 

.177 

.248 

.283 

.354 

.492 

.591 

.689 

.787 

.945 

.187 

.262 

.299 

.374 

.524 

.620 

.724 

.827 

.984 

1.5 x D0 (L1 < 1.5 x Thread Diameter) 

No. of 

Flutes 

Z 

3 

3 

3 

3 

3 

3 

4 

4 

4 

Teeth 

Zt 

9 

9 

9 

9 

10 

10 

10 

10 

12 

Bore Dia.* 

inch 

.098 

.129 

.165 

.197 

.268 

.335 

.405 

.472 

.551 


Pitch 

4 

7

Helicool 

ISO Metric 

Internal 

L1 

L 

D2 

1/4P 

Internal 

Le 

60º 

D 

1/8P 

External 



Le 

L1 

D2 


Thread 

Pitch 

Ordering Code 

EDP No. 




M3x0.5 

M4x0.7 

M5x0.8 

M6x1.0 

M8x1.25 

M10x1.5 

M12x1.75 

M14x2.0 

M16x2.0 

M18x2.5 

M20x2.5 

M24x3.0 

M3.5-M16x0.5 

M4x0.5 

M5x0.5 

M6x0.75 

M8-M40x1.0 

M8x1.0 

M10x1.0 

M12x1.0 

M10x1.25 

M12-M48x1.5 

M12x1.5 

M14x1.5 

M16x1.5 

M17-M80x2.0 

M17-M80x2.0 

0.5 

0.5 

0.5 

0.7 

0.75 

0.8 

1.0 

1.0 

1.0 

1.0 

1.25 

1.25 

1.5 

1.5 

1.5 

1.5 

1.75 

2.0 

2.0 

2.5 

2.5 

3.0 

HC19094L02-I0.50ISO TM... 

HC19126L03-I0.50ISO TM... 

HC25165L04-I0.50ISO TM... 

HC19124L03-I0.70ISO TM... 

HC25197L04-I0.75ISO TM... 

HC19159L04-I0.80ISO TM... 

HC25189L04-I1.00ISO TM... 

HC31264L06-I1.00ISO TM... 

HC37343L08-I1.00ISO TM... 

HC50421L09-I1.00ISO TM... 

HC31256L06-I1.25ISO TM... 

HC37335L08-I1.25ISO TM... 

HC37323L07-I1.50ISO TM... 

HC37370L09-I1.50ISO TM... 

HC50469L11-I1.50ISO TM... 

HC63547L12-I1.50ISO TM... 

HC37370L09-I1.75ISO TM... 

HC50457L11-I2.00ISO TM... 

HC63535L12-I2.00ISO TM... 

HC63583L14-I2.50ISO TM... 

HC75673L16-I2.50ISO TM... 

HC75746L19-I3.00ISO TM... 

80336 

80338 

80339 

80284 

80340 

80341 

80342 

80344 

80285 

80286 

80287 

80345 

80288 

80347 

80348 

80349 

80350 

80289 

80352 

80354 

80290 

80359 

3/16 

3/16 

1/4 

3/16 

1/4 

3/16 

1/4 

5/16 

3/8 

1/2 

5/16 

3/8 

3/8 

3/8 

1/2 

5/8 

3/8 

1/2 

5/8 

5/8 

3/4 

3/4 

.094 

.126 

.165 

.124 

.197 

.159 

.189 

.264 

.343 

.421 

.256 

.335 

.323 

.370 

.469 

.547 

.370 

.457 

.535 

.583 

.673 

.746 

1.772 

1.772 

2.244 

1.772 

2.244 

2.244 

2.244 

2.402 

2.874 

2.874 

2.402 

2.874 

2.874 

2.874 

3.150 

3.150 

2.874 

3.150 

3.622 

3.622 

4.016 

4.016 

.236 

.315 

.394 

.331 

.472 

.409 

.472 

.630 

.787 

.945 

.640 

.787 

.768 

.945 

1.122 

1.240 

.965 

1.102 

1.260 

1.378 

1.575 

1.890 

.246 

.325 

.404 

.344 

.487 

.425 

.492 

.650 

.807 

.965 

.664 

.812 

.797 

.974 

1.152 

1.270 

.999 

1.142 

1.299 

1.427 

1.624 

1.949 


No. of 

Flutes 

Z 

3 

3 

3 

3 

3 

3 

3 

3 

3 

4 

3 

3 

3 

4 

4 

4 

4 

4 

4 

4 

4 

4 

Teeth 

Zt 

12 

16 

20 

12 

16 

13 

12 

16 

20 

24 

13 

16 

13 

16 

19 

21 

14 

14 

16 

14 

16 

16 

Bore Dia.* 

inch 

.098 

.138 

.177 

.129 

.209 

.165 

.197 

.276 

.354 

.433 

.268 

.346 

.335 

.413 

.492 

.571 

.405 

.472 

.551 

.598 

.687 

.827 


Pitch 

4

Helicool 

NPT 

External / Internal 

30° 30° 

Internal 

L1 

Le 

L 

D2 

h 

D2 

D 

90° 1º47’ 

External 

Defined by: USAS B2.1:1968 

Tolerance class: Standard NPT 

Le 

L1 

D2 


No. of 

Thread Pitch Ordering Code 

EDP No. 


Teeth Bore Dia.* 

Flutes 

tpi External + Internal VTH D D2 L Le L1 Z Zt 

inch 

1/16”x27 

1/8”x27 

1/4”x18 

3/8”x18 

1/2” , 3/4”x14 

1”,1 1/4”,1 1/2” ,2”x11.5 

2 1/2”x8 ; 3”x8 

27 

27 

18 

18 

14 

11.5 

8 

HC25232L03-EI27NPT TM... 





HC75746L09-EI11.5NPT TM... 


80321 

80322 

80323 

80324 

80325 

80326 

80327 

1/4 

5/16 

3/8 

1/2 

5/8 

3/4 

3/4 

.232 2.244 

.301 2.402 

.370 2.874 

.439 2.874 

.561 3.150 

.746 4.016 

.746 4.016 

.370 

.370 

.556 

.556 

.714 

.870 

1.250 

.389 

.389 

.583 

.583 

.750 

.913 

1.313 

3 

3 

3 

4 

4 

4 

4 

10 

10 

10 

10 

10 

10 

10 

.244 

.330 

.437 

.562 

.704, .905 

1.411, 1.484, 1.732, 2.204 

2.625, 3.232 

NPTF 


Internal 

30° 30° 

h 

D2 

L1 

Le 

L 

D 

D2 

90° 1º47’ 

External 

Defined by: ANSI 1.20.3-1976 

Tolerance class: Standard NPTF 

Le 

L1 

D2 


Thread 

No. of 

Pitch Ordering Code 

EDP No. 



Flutes 

tpi External + Internal VTH D D2 L Le L1 Z Zt 

inch 

1/16”x27 

1/8”x27 

1/4”x18 

3/8”x18 

1/2”, 3/4”x14 

1”, 1 1/4”, 1 1/2”, 2”x11.5 

2 1/2”x8; 3”x8 

27 

27 

18 

18 

14 

11.5 

8 

HC25232L03-EI27NPTF TM... 





HC75746L09-EI11.5NPTF TM... 


80328 

80329 

80330 

80331 

80332 

80333 

80334 

1/4 

5/16 

3/8 

1/2 

5/8 

3/4 

3/4 

.232 

.301 

.370 

.439 

.561 

.746 

.746 

2.244 

2.402 

2.874 

2.874 

3.150 

4.016 

4.016 

.370 

.370 

.556 

.556 

.714 

.870 

1.250 

.389 

.389 

.583 

.583 

.750 

.913 

1.313 

3 10 

3 10 

3 10 

4 10 

4 10 

4 10 

4 10 

.240 

.330 

.437 

.562 

.704, .905 

1.411, 1.484, 1.720, 2.188 

2.610, 3.232 


Pitch 

4 

9

Helicool 

Whitworth 


L1 

L 

D2 

R0.137P 

Internal 

55° 

Le 

D 

R0.137P 

External 

Defined by: B.S.84:1956, 

DIN 259, ISO228/1:1982 

Tolerance class: Medium class A 

Le 

L1 

D2 


Thread 

Pitch 

Ordering Code 

EDP No. 

BSW BSF tpi External + Internal VTH 

1/4"x20 

5/16"x18 

3/8"x16 

7/16"x14 

1/2"x12 

9/16"x12 

5/8"x11 

11/16"x11 

1/4"x26 

5/16"x22 

3/8"x20 

3/8"x20 

7/16"x18 

7/16"x18 

1/2",9/16"x16 

1/2",9/16"x16 

9/16"x16 

5/8",11/16"x14 

5/8",11/16"x14 

11/16"x14 

3/4"x12 

3/4"x12 

3/4"x12 

7/8"x11 

26 

22 

20 

20 

18 

18 

16 

16 

16 

14 

14 

14 

12 

12 

12 

11 

11 

HC25197L05-EI26BSF TM... 


HC25175L05-EI20BSW TM... 















80368 

80369 

80370 

80371 

80372 

80373 

80374 

80375 

80376 

80377 

80378 

80379 

80380 

80381 

80382 

80383 

80384 

D 

1/4 

5/16 

1/4 

5/16 

1/4 

3/8 

5/16 

1/2 

1/2 

3/8 

5/8 

5/8 

3/8 

1/2 

5/8 

1/2 

5/8 


D2 

.197 

.250 

.175 

.301 

.230 

.362 

.283 

.413 

.478 

.335 

.528 

.591 

.362 

.444 

.622 

.496 

.559 

L 

2.244 

2.402 

2.244 

2.402 

2.244 

2.874 

2.402 

2.874 

3.150 

2.874 

3.150 

3.622 

2.874 

3.150 

3.622 

3.150 

3.622 


Le 

.500 

.636 

.500 

.750 

.611 

.889 

.750 

1.000 

1.125 

.857 

1.214 

1.357 

1.000 

1.083 

1.500 

1.273 

1.364 

L1 

.519 

.659 

.525 

.775 

.639 

.917 

.781 

1.031 

1.156 

.893 

1.250 

1.393 

1.042 

1.125 

1.542 

1.318 

1.409 

No. of 

Flutes 

Z 

3 

3 

3 

3 

3 

3 

3 

4 

4 

3 

4 

4 

3 

4 

4 

4 

4 

Teeth 

Zt 

13 

14 

10 

15 

11 

16 

12 

16 

18 

12 

17 

19 

12 

13 

18 

14 

15 

Bore Dia.* 

inch 

.209 

.264 

.197 

.323 

.256 

.382 

.311 

.437 

.496 

.362 

.551 

.614 

.413 

.476 

.661 

.528 

.591 


Pitch 

4

Helicool 

BSP(G) 


L1 

L 

D2 

R 0.137P 

Internal 

55° 

Le 

D 

h 

R 0.137P 

External 

Defined by: B.S.2779:1956 

Tolerance class: Medium class 

Le 

L1 

D2 



EDP No. 


No. of 

Flutes 

Teeth 

Standard tpi External + Internal VTH D D2 L Le L1 Z Zt 

1/16", 1/8"x28 28 HC31252L04-EI28BSP TM... 80386 5/16 .252 2.402 .464 .480 3 13 

1/8"x28 

28 HC37323L05-EI28BSP TM... 80388 3/8 .323 2.874 .571 .591 3 16 

1/4", 3/8"x19 19 HC50433L08-EI19BSP TM... 80389 1/2 .433 2.874 .789 .815 4 15 

3/8"x19 

19 HC63571L10-EI19BSP TM... 80391 5/8 .571 3.622 1.000 1.028 4 19 

1"-4"x11 

11 HC75746L16-EI11BSP TM... 80393 3/4 .746 4.016 1.636 1.681 4 18 


Thread 

Standard 

1/16" , 1/8"x28 

1/8"x28 

1/4" , 3/8"x19 

3/8"x19 

1/2"-7/8"x14 

Pitch 

tpi 

28 

28 

19 

19 

14 

Ordering Code 

External + Internal 

HC31252L06-EI28BSP TM... 





EDP No. 

VTH 

80385 

80387 

80319 

80390 

80392 

1.5 x D0 (L1 < 1.5 x Thread Diameter) 


D D2L 

Le L1 

5/16 .252 2.402 .607 .625 

3/8 .323 2.874 .750 .768 

1/2 .433 3.150 1.053 1.079 

5/8 .571 3.622 1.316 1.342 

3/4 .705 4.016 1.643 1.678 

No. of 

Flutes 

Z 

3 

3 

4 

4 

4 

Teeth 

Zt 

17 

21 

20 

25 

23 

Bore Dia.* 

inch 

.264 

.324 

.465 

.602 

.752 


Bore Dia.* 

inch 

.264 

.324 

.465 

.602 

.752 

BSPT 


L1 

Le 

L 

D2 

R0.137P 

27.5° 27.5° 

Internal 

D2 

D 

8 

h 

D2 

90° 147' ° RR0.137P 

External 


Tolerance class: Standard BSPT 

Le 

L1 


Thread 

Pitch 

Ordering Code 

EDP No. 


No. of 

Flutes 

Teeth 

Bore Dia.* 

Standard 

tpi External + Internal VTH D D2L 

Le 

L1 

Z 

Zt 

inch 

1/16"x28 

1/8"x28 

1/4"x19 

3/8"x19 

1/2, 3/4"x14 

1", 1 1/2", 2", 2 1/2"x11 

28 

28 

19 

19 

14 

11 

HC25232L03-EI28BSPT TM... 






80394 

80320 

80395 

80396 

80397 

80398 

1/4 

5/16 

1/2 

1/2 

5/8 

3/4 

.232 

.301 

.400 

.439 

.561 

.746 

2.402 

2.402 

2.874 

2.874 

3.150 

4.016 

.393 

.393 

.579 

.579 

.857 

1.0 

.401 

.401 

.605 

.605 

.893 

1.136 

3 

3 

3 

4 

4 

4 

11 

11 

11 

11 

12 

12 

.264 

.342 

.464 

.598 

.748 

1.209 


Pitch 

4 

11

Helicool - R (HCR) 

American UN 

Internal 

1/4P Internal 

60° 

L1 

Le 

L 

D 

D2 

D2 

1/8P 

External 



Le 

L1 

HeliCool-R 

Helical Fluted Thread Mill with Radial Cooling 

UNC 

No.10-24 

No.12-24 

1/4"x20 

5/16"x18 

3/8"x16 

7/16"x14 

1/2"x13 

9/16"x12 

NPT 

Thread Pitch Ordering Code EDP No. 


No. of 

Flutes 

Teeth 

UNF 

UNEF tpi 

Internal 

VTH D D2 L Le L1 Z Zt 

No.10-32 No.12-3/8”x32 32 HCR19150L03-I32UNF TM... 80458 3/16 .150 1.772 .375 .391 3 12 

1/4"x28 7/16”,1/2"x28 28 HCR25203L05-I28UNF TM... 80459 1/4 .203 2.244 .500 .518 3 14 

5/16”,3/8"x24 9/16”-11/16”x24 24 HCR19141L04-I24UNC TM... 80460 3/16 .141 1.772 .375 .396 3 9 

5/16”,3/8"x24 9/16”-11/16”x24 24 HCR19163L04-I24UNC TM... 80461 3/16 .163 1.772 .417 .437 3 10 

5/16”,3/8"x24 9/16”-11/16”x24 24 HCR31263L06-I24UNF TM... 80462 5/16 .263 2.402 .625 .646 3 15 

3/8"x24 9/16”-11/16”x24 24 HCR37323L07-I24UNF TM... 80463 3/8 .323 2.874 .750 .771 3 18 

7/16”,1/2"x20 3/4”-1"x20 20 HCR25192L05-I20UNC TM... 80464 1/4 .192 2.244 .500 .525 3 10 

1/2"x20 3/4”-1”x20 20 HCR50437L10-I20UNF TM... 80465 1/2 .437 3.150 1.000 1.025 4 20 

9/16”,5/8”x18 11/16"-1 11/16”x18 18 HCR31242L16-I18UNC TM... 80466 5/16 .242 2.402 .611 .639 3 11 

3/4”x16 

16 HCR31301L07-I16UNC TM... 80467 5/16 .301 2.402 .750 .781 3 12 

7/8”x14 

14 HCR37354L08-I14UNC TM... 80468 3/8 .354 2.874 .857 .893 3 12 

13 HCR50407L10-I13UNC TM... 80469 1/2 .407 3.150 1.000 1.039 4 13 

1”-1 1/2”x12 

12 HCR50465L11-I12UNC TM... 80470 1/2 .465 3.150 1.084 1.125 4 13 


30° 

30° 

Internal 

h 

L1 

Le 

L 

D2 


D 

D2 

Bore Dia.* 

inch 

.157 

.216 

.150 

.177 

.272 

.335 

.201 

.453 

.260 

.315 

.370 

.430 

.484 

90° 1º47’ 

External 



Le 

L1 

HeliCool-R 

Helical Fluted Thread Mill with Radial Cooling 


EDP No. 


No. of 

Flutes 


Standard 

tpi External + Internal VTH D D2L Le L1 Z Zt 

inch 

1/16”x27 

1/8”x27 

1/4”x18 

3/8”x18 

1/2” , 3/4”x14 

1”,1 1/4”,1 1/2” ,2”x11.5 

2 1/2”, 3”x8 

27 

27 

18 

18 

14 

11.5 

8 

HCR25232L03-EI27NPT TM... 





HCR75746L09-EI11.5NPT TM... 


80573 

80574 

80575 

80576 

80577 

80578 

80579 

1/4 

5/16 

3/8 

1/2 

5/8 

3/4 

3/4 

.232 

.301 

.370 

.439 

.561 

.746 

.746 

2.244 

2.402 

2.874 

2.874 

3.150 

4.016 

4.016 

.370 

.370 

.556 

.556 

.714 

.870 

1.250 

.389 

.389 

.583 

.583 

.750 

.913 

1.313 

3 

3 

3 

4 

4 

4 

4 

10 

10 

10 

10 

10 

10 

10 

.244 

.330 

.437 

.562 

.704, .905 

1.411, 1.484, 1.732, 2.204 

2.625, 3.232 

12 


Pitch 

4

Helicool - C (HCC) 

American UN 

Internal 

1/4P Internal 

L1 

Le 

L 

D2 

60° 

D 

D2 

1/8P 

External 



L1 

Lc 

Dc 

45º 

Dc = Minimum recommended chamfer diameter 

HeliCool-C 

Chamfer with Thru-Hole Cooling+ Helical Fluted Thread Mill 


UNC 

No.10-24 

No.12-24 

1/4"x20 

5/16"x18 

3/8"x16 

7/16"x14 

1/2"x13 

9/16"x12 

Thread Pitch Ordering Code EDP No. 


No. of 

Teeth 

Flutes 

UNF 

UNEF tpi 

Internal 

VTH D D2 Dc L Le L1 Lc Z Zt 

No.10-32 No.12-3/8”x32 32 HCC25150L03-I32UNF TM... 80449 1/4 .150 .202 2.244 .375 .391 .417 3 12 

1/4"x28 7/16”,1/2"x28 28 HCC31203L05-I28UNF TM... 80450 5/16 .203 .262 2.402 .500 .518 .549 3 14 

5/16”,3/8”x24 9/16”-11/16”x24 24 HCC25141L04-I24UNC TM... 80451 1/4 .141 .202 2.244 .375 .396 .425 3 9 

5/16”,3/8”x24 9/16”-11/16”x24 24 HCC25163L04-I24UNC TM... 80452 1/4 .163 .228 2.244 .417 .437 .468 3 10 

5/16”,3/8”x24 9/16”-11/16”x24 24 HCC37263L06-I24UNF TM... 80453 3/8 .263 .324 2.874 .625 .646 .678 3 15 

3/8"x24 9/16”-11/16”x24 24 HCC50323L07-I24UNF TM... 80454 1/2 .323 .387 3.150 .750 .771 .804 3 18 

7/16",1/2”x20 3/4”-1"x20 20 HCC31192L05-I20UNC TM... 80455 5/16 .192 .262 2.402 .500 .525 .558 3 10 

1/2”x20 3/4”-1”x20 20 HCC63437L10-I20UNF TM... 80456 5/8 .437 .512 3.622 1.000 1.025 1.065 3 20 

9/16",5/8”x18 11/16"-1 11/16”x18 18 HCC37242L16-I18UNC TM... 80457 3/8 .242 .324 2.874 .611 .639 .676 3 11 

3/4”x16 

16 HCC50301L07-I16UNC TM... 80528 1/2 .301 .387 3.150 .750 .781 .814 3 12 

7/8”x14 

14 HCC50354L08-I14UNC TM... 80529 1/2 .354 .449 3.150 .857 .893 .937 3 12 

13 HCC63407L10-I13UNC TM... 80530 5/8 .407 .512 3.622 1.000 1.039 1.087 4 13 

1”-1 1/2”x12 

12 HCC63465L11-I12UNC TM... 80531 5/8 .465 .574 3.622 1.084 1.125 1.178 4 13 

Bore 

Dia.* 

inch 

.157 

.216 

.150 

.177 

.272 

.335 

.201 

.453 

.260 

.315 

.370 

.430 

.484 

H e l i c o o l - C O p e r a t i n g C y c l e 

1 2 3 

Positioning 

Chamfering 

Thread Milling 


Pitch 

4 

13

Helicool - HTC (Thriller) 

ISO Metric 

Internal 

W 

L4 

L2 

45° 

L 

L3 

NEW! 

1/4P 

Internal 

60º 

140° 

D3 

D 

D2 Dc D1 

Le 

1/8P 

External 



HTC (Thriller) 

Drill, Chamfer & Thread with Coolant-Thru 

Thread 

ISO 2xDo Coarse 

M6x1.0 

M8x1.25 

M10x1.5 

M12x1.75 

ISO 2.5xDo Coarse 

M6x1.0 

M8x1.25 

M10x1.5 

Ordering Code 

Internal 

HTC M6x1.0x2D… 

HTC M8x1.25x2D … 

HTC M10x1.5x2D … 

HTC M12x1.75x2D… 

EDP No. 

Pitch 

HTC M6x1.0x2.5D … 80691 80684 1.00 

HTC M8x1.25x2.5D… 80692 

HTC M10x1.5x2.5D… 80693 

80685 

80686 

1.25 

1.50 

Dimensions (inch) 

VTS VTN mm L L4 L2 L3 W Le D3 D(mm) D1 Dc 

80687 80680 1.00 2.441 .571 .539 1.417 .039 .500 .197 8 .260 .248 

80688 80681 1.25 2.913 .717 .673 1.575 .051 .622 .268 10 .354 .327 

80689 80682 1.50 3.110 EDP No. .921 .870 1.772 .059 .811 .335 12 .433 .406 

80690 80683 1.75 3.504 1.067 1.004 1.772 .059 .945 .406 14 .531 .484 

2.441 

2.913 

3.110 

.650 .618 

.913 .870 

1.098 1.047 

1.417 

1.575 

1.772 

.039 

.051 

.059 

.579 

.819 

.988 

.197 

.268 

.335 

8 

10 

12 

.260 

.354 

.433 

.248 

.327 

.406 

D2 

.191 

.254 

.318 

.383 

.191 

.254 

.318 

No. of 

Flutes 

Z 

2 

2 

2 

2 

2 

2 

2 

Teeth 

Zt 

11 

11 

12 

12 

13 

15 

15 

H T C - T h r i l l e r O p e r a t i n g C y c l e 

1/3 P 

1/2 P 

1 P 

1/2 P 

1 2 3 4 5 6 7 

Start Drill & Chamfer Backing Off Entrance Arc Thread Milling Exit Arc 

Retraction 

For Thread Milling 

14

Helical He-Lex 

American UN 

Internal 

1/4P 

Internal 

60° 

Le 

D2 

h 

D 

1/8P 

External 



L 

Helical Flutes 

2 x D0 (Le < 2 x Thread Diameter) 


EDP No. 


No. of 

Flutes 

Teeth 

UNC 

UNF tpi Internal 

VTH D D2L Le Z Zt 

No.10-32 32 HX1/8".121”-I32UNF TM... 80534 1/8 .121 2.0 .312 3 10 

No.10-28 28 HX1/8".121”-I28UNF TM... 80535 1/8 .121 2.0 .321 3 9 

No.12-28 28 HX3/16".150”-I28UNF TM... 80536 3/16 .150 2.5 .464 3 13 

1/4"x28 28 HX3/16".181”-I28UNF TM... 80537 3/16 .181 2.5 .500 3 14 

No.10-24 

24 HX1/8".120”-I24UNC TM... 80538 1/8 .120 2.0 .333 3 8 

No.12-24 

24 HX3/16".138”-I24UNC TM... 80539 3/16 .138 2.5 .458 3 11 

5/16"x24 24 HX1/4".232”-I24UNF TM... 80540 1/4 .232 2.5 .625 3 15 

3/8"x24 24 HX5/16".291”-I24UNF TM... 80541 5/16 .291 3.0 .750 4 18 

1/4"x20 

20 HX3/16".181”-I20UNC TM... 80542 3/16 .181 2.5 .500 3 10 

1/2"x20 20 HX3/8".371”-I20UNF TM... 80543 3/8 .371 3.5 1.000 4 20 

7/16"x20 20 HX3/8".335”-I20UNF TM... 80544 3/8 .335 3.5 .900 4 18 

5/16"x18 

18 HX1/4".232”-I18UNC TM... 80545 1/4 .232 2.5 .667 3 12 

9/16"x18 18 HX3/8".371”-I18UNF TM... 80546 3/8 .371 3.5 .889 4 16 

5/8"x18 18 HX1/2".496”-I18UNF TM... 80547 1/2 .496 3.5 1.278 4 23 

3/8"x16 

16 HX5/16".285”-I16UNC TM... 80548 5/16 .285 3.0 .750 4 12 

3/4"x16 16 HX1/2".496”-I16UNF TM... 80549 1/2 .496 3.5 1.250 4 20 

7/16"x14 

14 HX5/16".305”-I14UNC TM... 80550 5/16 .305 3.0 .786 4 11 

1/2"x13 

13 HX3/8".350”-I13UNC TM... 80551 3/8 .350 3.5 .923 4 12 

9/16"x12 

12 HX3/8".371”-I12UNC TM... 80552 3/8 .371 3.5 .917 4 11 

5/8"x11 

11 HX1/2".469”-I11UNC TM... 80553 1/2 .469 3.5 1.273 4 14 

3/4"x10 

10 HX1/2".496”-I10UNC TM... 80554 1/2 .496 3.5 1.300 4 13 

7/8"x9 

9 HX5/8".621”-I9UNC TM... 80555 5/8 .621 4.0 1.444 4 13 

1"x8 

8 HX5/8".621”-I8UNC TM... 80556 5/8 .621 4.0 1.375 4 11 

Bore Dia.* 

inch 

.157 

.155 

.181 

.217 

.150 

.177 

.268 

.335 

.205 

.453 

.386 

.256 

.504 

.571 

.315 

.689 

.366 

.425 

.484 

.531 

.650 

.768 

.878 

*Bore Diameter applies to smallest thread Dia. 

15

He-Lex 


NPT 


30° 

30° 

Internal 

h 

Le 

D2 

D 

90° 1º47’ 

External 



L 


No. of 


EDP No. 


Teeth 

Flutes 

NPT 

tpi 

External+Internal VTH D D2** L Le Z Zt 

1/16"x27, 1/8"x27 27 

1/4"x18, 3/8"x18 18 

1/2"x14, 3/4"x14 14 

1"-2"x11.5 

11.5 

2 1/2"-6"x8 

8 

HX1/4".209”-EI27NPT TM... 80562 1/4 .209 2.5 .407 3 11 

HX5/16".305”-EI18NPT TM... 

NPTF 

HX1/2".496”-EI14NPT TM... 

HX5/8".621”-EI11.5NPT TM... 

HX3/4".746”-EI8NPT TM... 

80563 

80564 

80565 

80566 

5/16 

1/2 

5/8 

3/4 

.305 

.496 

.621 

.746 

3.0 

3.5 

4.0 

5.0 

.611 

.929 

1.130 

1.500 

4 

4 

4 

4 

11 

13 

13 

12 

Bore Dia.* 

inch 

.248, .335 

.437, .571 

.697, .906 

1.142-2.205 

from 2.618 

NPTF 


30° 

30° 

Internal 

h 

Le 

D2 

D 

90° 1º47’ 

External 



L 



EDP No. 


No. of 

Flutes 

Teeth 

NPTF 

tpi 

External+Internal VTH D D2** L Le Z Zt 

1/16"x27, 1/8"x27 27 

HX1/4".209”-EI27NPTF TM... 80557 1/4 .209 2.5 .407 3 11 

1/4"x18, 3/8"x18 18 

HX5/16".305”-EI18NPTF TM... 80558 5/16 .305 3.0 .611 4 11 

1/2"x14, 3/4"x14 14 

HX1/2".496”-EI14NPTF TM... 80559 1/2 .496 3.5 .929 4 13 

1"-2"x11.5 

11.5 

HX5/8".621”-EI11.5NPTF TM... 80560 5/8 .621 4.0 1.130 4 13 

2 1/2"-6"x8 

8 

HX3/4".746”-EI8NPTF TM... 80561 3/4 .746 5.0 1.500 4 12 

Bore Dia.* 

inch 

.248, .331 

.437, .579 

.705, .921 

1.158-2.213 

from 2.638 

16 **Large end cutting diameter


American UN 

Internal 

1/4P 

Internal 

60° 

h 

L1 

L 

D2 

1/8P 

External 

D 



TM Solid Carbide - Deep Threading 



Long Tools for Deep Holes 


EDP No. 


No. of 

Flutes Teeth 

UNC UNF tpi 

Internal 

VTH D D2 L L1 Z Zt 

1/4"x20 

5/16"x18 

3/8"x16 

7/16"x14 

1/2"x13 

9/16"x12 

5/8"x11 

3/4"x10 

1/4"x28 

5/16"x24 

3/8"x24 

7/16"x20 

1/2"x20 

9/16"x18 

5/8"x18 

3/4"x16 

20 

28 

18 

24 

16 

24 

14 

20 

13 

20 

12 

18 

11 

18 

10 

16 

D1T5/16”.157”-I20UNCTM... 

D1T5/16”.181”-I28UNFTM... 

D1T3/8”.205”-I18UNCTM... 

D1T3/8”.224”-I24UNFTM... 

D1T3/8”.264”-I16UNCTM... 

D1T3/8”.291”-I24UNFTM... 

D1T1/2”.299”-I14UNCTM... 

D1T1/2”.335”-I20UNFTM... 

D1T1/2”.350”-I13UNCTM... 

D1T1/2”.398”-I20UNFTM... 

D1T5/8”.406”-I12UNCTM... 

D1T5/8”.445”-I18UNFTM... 

D1T5/8”.433”-I11UNCTM... 

D1T5/8”.504”-I18UNFTM... 

D1T5/8”.531”-I10UNCTM... 

D1T5/8”.610”-I16UNFTM... 

80220 

80271 

80221 

80272 

80222 

80273 

80274 

80275 

80223 

80276 

80224 

80277 

80225 

80278 

80226 

80227 

5/16 

5/16 

3/8 

3/8 

3/8 

3/8 

1/2 

1/2 

1/2 

1/2 

5/8 

5/8 

5/8 

5/8 

5/8 

5/8 

.157 

.181 

.205 

.224 

.264 

.291 

.299 

.335 

.350 

.398 

.406 

.445 

.433 

.504 

.531 

.610 

2.480 

2.480 

2.874 

2.874 

2.874 

2.874 

3.268 

3.268 

3.268 

3.268 

3.780 

3.780 

3.976 

3.976 

4.370 

4.370 

.787 

.787 

.984 

.984 

1.181 

1.181 

1.378 

1.378 

1.575 

1.575 

1.772 

1.772 

1.969 

1.969 

2.362 

2.362 

3 

3 

3 

3 

3 

3 

4 

4 

4 

4 

4 

4 

4 

4 

5 

5 

1 

1 

1 

1 

1 

1 

1 

1 

1 

1 

1 

1 

1 

1 

1 

1 

Note: Additional tools are available upon request. 

Bore Dia.* 

Inch 

.205 

.217 

.256 

.268 

.315 

.335 

.366 

.386 

.425 

.453 

.484 

.504 

.531 

.571 

.650 

.689 

17

MilliPro 

American UN 

Internal 

h 

1/4P 

Internal 

60° 

L1 

L 

D2 

1/8P 

External 

D 



Le = Pitch x 3 

Recommended Overhang 

3 Flutes 

MilliPro 



EDP No. 



Bore Dia.* 

UNC UNF tpi Internal VTH D D2 L L1 Z Zt Inch 

No.1-64 

No.2-56 

No.3-48 

No.4, No.5-40 

No.5-40 

No.6, No.8-32 

No.8-32 

No.10-24 

1/4”x20 

3/8”x16 

7/16”x14 

No.1-72 

No.2-64 

No.3-56 

No.4-48 

No.6-40 

No.6-40 

No.8-36 

No.10-32 

No.10-32 

1/4”x28 

5/16”x24 

5/16”x24 

7/16”x20 

7/16”x20 

72 

64 

56 

48 

40 

40 

36 

32 

32 

28 

24 

24 

20 

20 

16 

14 

D3T25057L154-I72UN TM... 

D3T25055L165-I64UN TM... 

D3T25065L197-I56UN TM... 

D3T25075L236-I48UN TM... 

D3T25083L236-I40UN TM... 

D3T25096L283-I40UN TM... 

D3T25130L343-I36UN TM... 

D3T25100L292-I32UN TM... 

D3T25126L394-I32UN TM... 

D3T25207L520-I28UN TM... 

D3T25141L402-I24UN TM... 

D3T31263L650-I24UN TM... 

D3T25192L528-I20UN TM... 

D3T37375L906-I20UN TM... 

D3T31264L752-I16UN TM... 

D3T37354L917-I14UN TM... 

80215 

80214 

80216 

80217 

80218 

80219 

80240 

80241 

80242 

80243 

80244 

80245 

80246 

80247 

80584 

80248 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

5/16 

1/4 

3/8 

5/16 

3/8 

.057 

.055 

.065 

.075 

.083 

.096 

.130 

.100 

.126 

.207 

.141 

.263 

.192 

.375 

.264 

.354 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.480 

2.244 

2.874 

2.480 

2.874 

.154 

.165 

.197 

.236 

.236 

.283 

.343 

.292 

.394 

.520 

.402 

.650 

.528 

.906 

.752 

.917 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

.059 

.059 

.071 

.079 

.090 

.102 

.138 

.110 

.134 

.216 

.150 

.272 

.201 

.390 

.315 

.370 

No. of 

Flutes 

Teeth 

MilliPro 



Thread 

Pitch 

Ordering Code 

UNC UNF tpi Internal 

EDP No. 

VTH 

D 

Dimensions mm 

D2 L 

L1 

No. of 

Flutes 

Z 

Teeth 

Zt 

Bore Dia.* 

inch 

No.1-72 

72 

D3T25057L226-I72UN TM... 

80443 

1/4 

.057 

2.244 

.226 

3 

3 

.059 

No.4,No.5-40 

No.6-40 

40 

D3T25083L354-I40UN TM... 

80263 

1/4 

.083 

2.244 

.354 

3 

3 

.091 

No.5-40 

No.6,No.8-32 

No.8-32 

1/4”x20 

No.6-40 

No.10-32 

No.10-32 

1/4”x28 

5/16”x24 

7/16”x20 

40 

32 

32 

28 

24 

20 

D3T25096L394-I40UN TM... 

D3T25100L433-I32UN TM... 

D3T25126L512-I32UN TM... 

D3T25207L772-I28UN TM... 

D3T31263L965-I24UN TM... 

D3T25192L780-I20UN TM... 

80249 

80586 

80250 

80251 

80252 

80253 

1/4 

1/4 

1/4 

1/4 

5/16 

1/4 

.096 

.100 

.126 

.207 

.263 

.192 

2.244 

2.244 

2.244 

2.244 

2.480 

2.244 

.394 

.433 

.512 

.772 

.965 

.780 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

.102 

.110 

.134 

.216 

.272 

.201 

18 *Bore Diameter applies to smallest thread Dia.

MilliPro 

ISO Metric 

Internal 

1/4P Internal 

60º 

L1 

L 

D2 

1/8P 

External 

D 



Le = Pitch x 3 


3 Flutes 

MilliPro 


Thread 

Pitch 

Ordering Code 


M1.6x0.35 

0.35 D3T12047L134-I0.35ISO TM… 

M2x0.4 

0.4 D3T25061L165-I0.4ISO TM… 

M2.2x0.45 

0.45 D3T25065L181-I0.45ISO TM… 

M2.5x0.45 

0.45 D3T25077L205-I0.45ISO TM… 

M3x0.5 M3.5-M16x0.5 0.5 D3T25094L244-I0.5ISO TM… 

M3.5x0.6 

0.6 D3T25108L287-I0.6ISO TM… 

M4x0.7 

0.7 D3T25124L327-I0.7ISO TM… 

M5x0.8 

0.8 D3T25159L409-I0.8ISO TM… 

M6x1.0 M8-M40x1.0 1.0 D3T25189L492-I1.0ISO TM… 

M8x1.25 

1.25 D3T31256L654-I1.25ISO TM… 

M10x1.5 M12-M48x1.5 1.5 D3T37323L819-I1.50ISO TM… 

M12x1.75 

1.75 D3T37371L984-I1.75ISO TM… 

EDP No. 

VTH 

80660 

80661 

80662 

80663 

80664 

80665 

80666 

80667 

80668 

80669 

80670 

80671 


D 

1/8 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

5/16 

3/8 

3/8 


D2 

.047 

.061 

.065 

.077 

.094 

.108 

.124 

.159 

.189 

.256 

.323 

.371 

L 

1.181 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.480 

2.874 

2.874 

L1 

.134 

.165 

.181 

.205 

.244 

.287 

.327 

.409 

.492 

.654 

.819 

.984 

No. Recommended of 

Drill 


Flutes Size + Hole Tolerance 

Z 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

Zt 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

3 

inch 

.049 

.063 

.069 

.081 

.098 

.114 

.130 

.165 

.197 

.268 

.335 

.406 

MilliPro 


Thread Thread Pitch Ordering Code 

EDP No. 


VTH 

M1.6x0.35 

M2x0.4 

M2.5x0.45 

M3x0.5 

M4x0.7 

M5x0.8 

M6x1.0 

M8x1.25 

M3.5-M16x0.5 

M8-M40 x1.0 

0.35 

0.4 

0.45 

0.5 

0.7 

0.8 

1.0 

1.25 

D3T12047L197-I0.35ISO TM… 

D3T25061L244-I0.4ISO TM… 

D3T25077L276-I0.45ISO TM… 

D3T25094L362-I0.5ISO TM… 

D3T25124L484-I0.7ISO TM… 

D3T25159L606-I0.8ISO TM… 

D3T25189L728-I1.0ISO TM… 

D3T31256L969-I1.25ISO TM… 

80672 

80673 

80674 

80675 

80676 

80677 

80678 

80679 


Dimensions Dimensions inch inch 

D 

1/8 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

5/16 

D2 

.047 

.061 

.077 

.094 

.124 

.159 

.189 

.256 

L 

1.181 

2.244 

2.244 

2.244 

2.244 

2.244 

2.244 

2.480 

L1 

.197 

.244 

.276 

.362 

.484 

.606 

.728 

.969 

No. of of 

Flutes 

Z 

3 

3 

3 

3 

3 

3 

3 

3 

Teeth Recommended 

Teeth 

*Drill 

Bore 

Size 

Dia.* 

+0.002 

Zt 

3 

3 

3 

3 

3 

3 

3 

3 

inch 

.049 

.063 

.081 

.098 

.130 

.165 

.197 

.268 


19

MilliPro HD 

American UN 

Internal 

NEW! 

1/4P Internal 

60º 

L1 

L 

D2 

1/8P 

External 

D 




MilliPro HD 

Miniature Thread Mills for Hard Materials up to 62 HRc 

4 Flutes 

Left Hand Tool 



No. of 

EDP No. 


Flutes 


UNC UNF tpi Internal VTH D D2 L L1 Z Zt Inch 

No.2-56 No.3-56 56 D2L25065L197-I56UN TM… 80645 1/4 .065 3.00 .21 4 2 .070 

No.3-48 No.4-48 48 D2L25075L236-I48UN TM… 80646 1/4 .075 3.00 .26 4 2 .093 

No.4-40; No.5-40 No.6-40 40 D2L25083L236-I40UN TM… 80647 1/4 .083 3.00 .26 4 2 .093 

No.5-40 No.6-40 40 D2L25096L283-I40UN TM… 80648 1/4 .096 3.00 .31 4 2 .116 

No.8-36 36 D2L25130L343-I36UN TM… 80649 1/4 .130 3.00 .37 4 2 .140 

No.6-32; No.8-32 No.10-32 32 D2L25100L292-I32UN TM… 80650 1/4 .100 3.00 .32 4 2 .161 

No.8-32 No.10-32 32 D2L25126L394-I32UN TM… 80651 1/4 .126 3.00 .42 4 2 .136 

1/4"x28 28 D2L25207L520-I28UN TM… 80652 1/4 .207 3.00 .56 4 2 .219 

No.10-24 5/16"x24 24 D2L25141L402-I24UN TM… 80653 1/4 .141 3.00 .44 4 2 .154 

5/16"x24 24 D2L31263L650-I24UN TM… 80654 5/16 .263 3.15 .69 4 2 .277 

1/4"x20 

7/16"x20 20 D2L25192L528-I20UN TM… 80655 1/4 .192 3.00 .58 4 2 .204 

7/16"x20 20 D2L37376L906-I20UN TM… 80656 3/8 .376 4.00 .96 4 2 .390 

3/8"x16 

16 D2L31301L776-I16UN TM… 80657 5/16 .301 3.15 .84 4 2 .316 

7/16"x14 

14 D2L37354L917-I14UN TM… 80658 3/8 .354 4.00 .99 4 2 .375 

1/2"x13 

13 D2L37390L101-I13UN TM… 80659 3/8 .390 4.00 1.08 4 2 .422 

MilliPro HD 


Thread 

Pitch 

Ordering Code 

EDP No. 

UNC UNF tpi Internal 

VTH D 

No.4-40; No.5-40 

No.5-40 

No.6-32; No.8-32 

No.8-32 

1/4"x20 

7/16"x14 

No.6-40 

No.6-40 

No.10-32 

No.10-32 

1/4"x28 

5/16"x24 

7/16"x20 

40 

40 

32 

32 

28 

24 

20 

14 

D2L25083L354-I40UN TM… 

D2L25096L394-I40UN TM… 

D2L25100L433-I32UN TM… 

D2L25126L512-I32UN TM… 

D2L25207L772-I28UN TM… 

D2L31263L965-I24UN TM.. 

D2L25192L780-I20UN TM… 

D2L37354L131-I14UN TM… 

80694 

80695 

80696 

80697 

80698 

80699 

80700 

80701 

1/4 

1/4 

1/4 

1/4 

1/4 

5/16 

1/4 

3/8 


D2 

.083 

.096 

.100 

.126 

.207 

.263 

.192 

.354 


L 

3.00 

3.00 

3.00 

3.00 

3.00 

3.15 

3.00 

4.00 

L1 

.38 

.41 

.46 

.54 

.81 

1.01 

.83 

1.39 

No. of 

Flutes 

Z 

4 

4 

4 

4 

4 

4 

4 

4 

Teeth 

Zt 

2 

2 

2 

2 

2 

2 

2 

2 

Bore Dia.* 

inch 

.093 

.104 

.111 

.136 

.219 

.272 

.204 

.375 

Two cutting teeth: Partial Profile for 

leading tooth followed by Full Profile 

for Finishing. 

The work direction should be from 

the top to the bottom. 

1 Pitch 

Roughing (Partial Profile) 

Finish (Full Profile) 

MilliPro HD Tools are left 

handed. For CNC use M04 code. 

20 *Bore Diameter applies to smallest thread Dia.

MilliPro HD 

ISO Metric 

Internal 

NEW! 

1/4P Internal 

60º 

L1 

L 

D2 

1/8P 

External 

D 




4 Flutes 

Left Hand Tool 

MilliPro HD 


Thread 

Pitch 

Ordering Code 


M2x0.4 

0.4 D2L25061L165-I0.4ISO TM… 

M2.2x0.45 

0.45 D2L25065L181-I0.45ISO TM… 

M2.5x0.45 

0.45 D2L25077L204-I0.45ISO TM… 

M3x0.5 M3.5-M16x0.5 0.5 D2L25094L244-I0.5ISO TM… 

M3.5x0.6 

0.6 D2L25108L287-I0.6ISO TM… 

M4x0.7 

0.7 D2L25124L326-I0.7ISO TM… 

M5x0.8 

0.8 D2L25159L409-I0.8ISO TM… 

M6x1.0 M8-M40x1.0 1.0 D2L25189L492-I1.0ISO TM… 

M8x1.25 

1.25 D2L31256L653-I1.25ISO TM… 

M10x1.5 M12-M48x1.5 1.5 D2L31308L818-I1.50ISO TM… 

M12x1.75 

1.75 D2L37371L984-I1.75ISO TM… 

EDP No. 

VTH 

80627 

80628 

80629 

80630 

80631 

80632 

80734 

80735 

80635 

80636 

80637 

D 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

1/4 

5/16 

5/16 

3/8 


D2 

.061 

.065 

.077 

.094 

.108 

.124 

.159 

.189 

.256 

.308 

.371 


L 

2.99 

2.99 

2.99 

2.99 

2.99 

2.99 

2.99 

2.99 

3.15 

3.15 

3.98 

L1 

.18 

.20 

.22 

.27 

.31 

.36 

.44 

.53 

.70 

.88 

1.05 

No. of 

Flutes 

Z 

4 

4 

4 

4 

4 

4 

4 

4 

4 

4 

4 

Teeth 

Zt 

2 

2 

2 

2 

2 

2 

2 

2 

2 

2 

2 

Bore Dia.* 

inch 

.063 

.070 

.081 

.101 

.116 

.128 

.169 

.201 

.268 

.339 

.406 

MilliPro HD 


Thread 

Pitch 

Ordering Code 

EDP No. 



No. of 

Flutes 

Teeth 

Bore Dia.* 


VTH 

D 

D2 

L 

L1 

Z 

Zt 

inch 

M2x0.4 

0.4 

D2L25061L244-I0.4ISO TM… 

80638 

1/4 

.061 

2.99 

.26 

4 

2 

.063 

M2.5x0.45 

0.45 

D2L25077L303-I0.45ISO TM… 

80639 

1/4 

.077 

2.99 

.32 

4 

2 

.081 

M3x0.5 

M3.5-M16x0.5 

0.5 

D2L25094L362-I0.5ISO TM… 

80640 

1/4 

.094 

2.99 

.38 

4 

2 

.101 

M4x0.7 

M5x0.8 

M6x1.0 

M8x1.25 

M8-M40x1.0 

0.7 

0.8 

1.0 

1.25 

D2L25124L484-I0.7ISO TM… 

D2L25159L606-I0.8ISO TM… 

D2L25189L728-I1.0ISO TM… 

D2L31256L968-I1.25ISO TM… 

80641 

80642 

80643 

80644 

1/4 

1/4 

1/4 

5/16 

.124 

.159 

.189 

.256 

2.99 

2.99 

2.99 

3.15 

.51 

.64 

.77 

1.02 

4 

4 

4 

4 

2 

2 

2 

2 

.128 

.169 

.201 

.268 

Two cutting teeth: Partial Profile for 

leading tooth followed by Full Profile 

for Finishing. 

The work direction should be from 

the top to the bottom. 

1 Pitch 

Roughing (Partial Profile) 

Finish (Full Profile) 

MilliPro HD Tools are left 

handed. For CNC use M04 code. 


21

Straight 

American UN 


h 

1/4P Internal 

60° 

1/8P External 

Le 

L 

D 

D2 

Defined by: ANSI B1.174 

Tolerance class: 2A/2B 

Straight Flutes - External 

Pitch 

Thread 

Ordering Code 

EDP No. 


No. of Flutes Teeth 

tpi 

32 

28 

20 

18 

16 

12 

8 

6 

* Available with 3 and 5 flutes. Add 3 or 5 to the ordering code (TM3.../TM5...) 

Straight Flutes - Internal 

Pitch 

External 

tpi 

36 

No.8 

32 

No.8 

32 

5/16” 

28 

No.12 

28 

7/16” 

24 

No.12 

20 

1/4” 

20 

9/16” 

18 

5/16” 

18 

9/16” 

16 

3/8” 

16 

13/16” 

14 

7/16” 

13 

1/2” 

12 

9/16” 

12 

1” 

11 

5/8” 

10 

3/4” 

9 

7/8” 

8 

1” 

7 

1 1/8” 

6 

1 3/8” 

5 

1 3/4” 

4.5 2” 

Min. Dia. External 

VTS 

D D2 L Le Z Zt 

No.6 

No.12 

1/4” 

5/16” 

3/8” 

9/16” 

1” 

1 3/8” 

S1/4”.240”-E32UNTM... 

S5/16”.310”-E28UNTM... 

S3/8”.370”-E20UNTM... 

S3/8”.370”-E18UNTM... 

S1/2”.470”-E16UNTM... 

S1/2”.470”-E12UNTM... 

S5/8”.620”-E8UNTM... 

S5/8”.620”-E6UNTM... 

80026 

80027/80408 

80028 

80029 

80030 

80031 

80032 

80033 

1/4 

5/16 

3/8 

3/8 

1/2 

1/2 

5/8 

5/8 

.240 

.310 

.370 

.370 

.470 

.470 

.620 

.620 

2.244 

2.480 

2.835 

2.835 

3.268 

3.268 

3.622 

3.622 

.562 

.786 

.900 

.944 

1.125 

1.167 

1.500 

1.500 

3 

3, 5 * 

5 

5 

5 

5 

5 

5 

Thread 

Ordering Code EDP No. 

Dimensions inch No. of Flutes 

Min. Dia. 

Internal 

VTS 

D D2 L Le Z 

S1/8”.120”-I36UNTM... 

S1/8”.120”-I32UNTM... 

S1/4”.240”-I32UNTM... 

S3/16”.145”-I28UNTM... 

S5/16”.310”-I28UNTM... 

S3/16”.160”-I24UNTM... 

S3/16”.160”-I20UNTM... 

S3/8”.370”-I20UNTM... 

S1/4”.200”-I18UNTM... 

S3/8”.370”-I18UNTM... 

S1/4”.240”-I16UNTM... 

S1/2”.470”-I16UNTM... 

80034 

80035 

80036 

80037 

80038/80441 

80039 

80040 

80041 

80440 

80043 

80044 

80045 

1/8 

1/8 

1/4 

3/16 

5/16 

3/16 

3/16 

3/8 

1/4 

3/8 

1/4 

1/2 

.120 

.120 

.240 

.145 

.310 

.160 

.160 

.370 

.200 

.370 

.240 

.470 

1.654 

1.654 

2.244 

1.654 

2.480 

2.244 

2.244 

2.835 

2.244 

2.835 

2.244 

3.268 

.250 

.250 

.562 

.321 

.786 

.333 

.400 

.900 

.500 

.944 

.562 

1.125 

3 

3 

3 

3 

3 , 5* 

3 

3 

5 

3 

5 

3 

5 

S5/16”.310”-I14UNTM... 

S5/16”.310”-I13UNTM... 

S3/8”.370”-I12UNTM... 

S1/2”.470”-I12UNTM... 

S3/8”.370”-I11UNTM... 

S1/2”.470”-I10UNTM... 

80046/80238 

80047/80237 

80048 

80049 

80050 

80051 

5/16 

5/16 

3/8 

1/2 

3/8 

1/2 

.310 

.310 

.370 

.470 

.370 

.470 

2.480 

2.480 

2.835 

3.268 

2.835 

3.268 

.714 

.769 

.917 

1.167 

.909 

1.100 

3 , 5* 

3 , 5* 

5 

5 

5 

5 

S5/8”.620”-I9UNTM... 

S5/8”.620”-I8UNTM... 

S5/8”.620”-I7UNTM... 

S3/4”.745”-I6UNTM... 

S3/4”.745”-I5UNTM... 

S3/4”.745”-I4.5UNTM... 

80442 

80053 

80054 

80055 

80057 

80058 

5/8 

5/8 

5/8 

3/4 

3/4 

3/4 

.620 

.620 

.620 

.745 

.745 

.745 

3.622 

3.622 

3.622 

4.095 

4.095 

4.095 

1.333 

1.500 

1.429 

1.500 

1.600 

1.555 

5 

5 

5 

5 

5 

5 


18 

22 

18 

17 

18 

14 

12 

9 

Teeth 

Zt 

9 

8 

18 

9 

22 

8 

8 

18 

9 

17 

9 

18 

10 

10 

11 

14 

10 

11 

12 

12 

10 

9 

8 

7 

h inch 

.019 

.022 

.031 

.034 

.038 

.051 

.077 

.102 

h inch 

.016 

.018 

.018 

.021 

.021 

.024 

.029 

.029 

.033 

.033 

.037 

.037 

.042 

.045 

.049 

.049 

.053 

.059 

.065 

.073 

.084 

.098 

.117 

.130 

22

Straight 

ISO Metric 


1/4P 

Internal 

60° 

Le 

D 

D2 

h 

L 

1/8P 

External 


Tolerance class: 6g/6H 

Straight Flutes - External 

Pitch 

Thread 

Ordering Code 

EDP No. 


No. of Flutes 

Teeth 

mm 

Min. Dia. 

External 

VTS 

D 

D2L 

Le 

Z 

Zt 

h Inch 

0.50 

0.75 

1.00 

1.50 

2.00 

3.00 

4.00 

6.00 

M3 

M4.5 

M6 

M10 

M14 

M24 

M36 

M64 

S1/4”.240”-E0.5ISOTM... 

S5/16”.310”-E0.75ISOTM... 

S3/8”.370”-E1.0ISOTM... 

S1/2”.470”-E1.5ISOTM... 

S1/2”.470”-E2.0ISOTM... 

S5/8”.620”-E3.0ISOTM... 

S5/8”.620”-E4.0ISOTM... 

S3/4”.745”-E6.0ISOTM... 

80000 

80001/80444 

80002 

80003 

80004 

80005 

80006 

80007 

1/4 

5/16 

3/8 

1/2 

1/2 

5/8 

5/8 

3/4 

.240 

.310 

.370 

.470 

.470 

.620 

.620 

.745 

2.244 

2.480 

2.835 

3.268 

3.268 

3.622 

3.622 

4.095 

.591 

.610 

.945 

1.181 

1.181 

1.417 

1.575 

1.417 

3 

3, 5 * 

5 

5 

5 

5 

5 

5 

30 

26 

24 

20 

15 

12 

10 

6 

.012 

.019 

.025 

.037 

.050 

.075 

.100 

.149 


Straight Flutes - Internal 

Pitch 

Thread 

Ordering Code EDP No. 

Dimensions inch No. of Flutes 

mm Min. Dia. 

Internal 

VTS 

D D2 L Le Z 

0.75 

0.75 

0.80 

1.00 

1.00 

1.25 

1.50 

1.50 

1.50 

1.75 

2.00 

2.00 

M4.5 

M8 

M5 

M6 

M12 

M8 

M10 

M14 

M18 

M12 

M16 

M18 

S1/8”.120”-I0.75ISOTM... 

S1/4”.240”-I0.75ISOTM... 

S3/16”.145”-I0.8ISOTM... 

S3/16”.160”-I1.0ISOTM... 

S5/16”.310”-I1.0ISOTM... 

S1/4”.200”-I1.25ISOTM... 

S1/4".240"-I1.5ISOTM... 

S3/8”.370”-I1.5ISOTM... 

S1/2”.470”-I1.5ISOTM... 

S5/16”.310”-I1.75ISOTM... 

S3/8”.370”-I2.0ISOTM... 

S1/2”.470”-I2.0ISOTM... 

80008 

80009 

80010 

80011 

80012/80239 

80013 

80014 

80015 

80016 

80017/80446 

80018 

80019 

1/8 

1/4 

3/16 

3/16 

5/16 

1/4 

1/4 

3/8 

1/2 

5/16 

3/8 

1/2 

.120 

.240 

.145 

.160 

.310 

.200 

.240 

.370 

.470 

.310 

.370 

.470 

1.496 

2.244 

1.654 

1.654 

2.480 

2.244 

2.244 

2.835 

3.268 

2.480 

2.835 

3.268 

.270 

.591 

.315 

.354 

.787 

.492 

.591 

.945 

1.181 

.758 

.944 

1.181 

3 

3 

3 

3 

3, 5 * 

3 

3 

5 

5 

3, 5 * 

5 

5 

2.50 

3.00 

3.50 

4.00 

5.00 

6.00 

M20 

M24 

M30 

M36 

M48 

M64 

S1/2”.470”-I2.5ISOTM... 

S5/8”.620”-I3.0ISOTM... 

S5/8”.620”-I3.5ISOTM... 

S5/8”.620”-I4.0ISOTM... 

S3/4”.745”-I5.0ISOTM... 

S3/4”.745”-I6.0ISOTM... 

80020 

80021 

80022 

80023 

80024 

80025 

1/2 

5/8 

5/8 

5/8 

3/4 

3/4 

.470 

.620 

.620 

.620 

.745 

.745 

3.268 

3.622 

3.622 

3.622 

4.095 

4.095 

1.181 

1.417 

1.516 

1.575 

1.575 

1.417 

5 

5 

5 

5 

5 

5 


Teeth 

Zt 

9 

20 

10 

9 

20 

10 

10 

16 

20 

11 

12 

15 

12 

12 

11 

10 

8 

6 

h Inch 

.017 

.017 

.018 

.023 

.023 

.029 

.035 

.035 

.035 

.040 

.046 

.046 

.058 

.069 

.081 

.092 

.116 

.139 

23

Straight 

NPT 


30° 

30° 

Internal 

h 

Le 

D 

D2 

90° 1º47’ 1.47’ 

External 

L 




Pitch 

Thread 

Ordering Code 

EDP No. 


No. of Flutes 

Teeth 

tpi 

Min. Dia. External + Internal 

VTS 

27 

1/16” S1/4”.240”-EI27NPTTM... 80080 

18 

1/4” 

S5/16”.310”-EI18NPTTM... 80081/80190 

14 

1/2” 

S1/2”.470”-EI14NPTTM... 80082 

11.5 

1” 

S5/8”.620”-EI11.5NPTTM... 80083 

8 

2 1/2” S5/8”.620”-EI8NPTTM... 80084 

*Available with 3 and 5 flutes. Add 3 or 5 to the ordering code (TM3.../TM5...) 

D 

1/4 

5/16 

1/2 

5/8 

5/8 

D2 

.240 

.310 

.470 

.620 

.620 

L 

2.244 

2.480 

3.268 

3.622 

3.622 

Le 

.370 

.555 

.786 

1.043 

1.500 

Z 

3 

3 , 5* 

5 

5 

5 

Zt 

10 

10 

11 

12 

12 

h inch 

.030 

.044 

.057 

.070 

.100 

NPTF 


30° 

30° 

Internal 

Le 

D2 

h 

D 

90° 

1°47’ 

External 

L 




Pitch 

Thread 

Ordering Code 

EDP EDP# No. 

Dimensions Dimensions inch inch 

No. of Flutes 

Teeth 

tpi 

27 

18 

14 

11.5 

8 

Min. Dia. 

1/16” 

1/4” 

1/2” 

1” 

2 1/2” 


S1/4”.240”-EI27NPTFTM... 

S5/16”.310”-EI18NPTFTM... 

S1/2”.470”-EI14NPTFTM... 

S5/8”.620”-EI11.5NPTFTM... 

S5/8”.620”-EI8NPTFTM... 

VTS 

80085 

80086/80233 

80087 

80088 

80089 

D D2 

1/4 .240 

5/16” .310 

1/2 .470 

5/8” .620 

5/8 .620 

L 

2.244 

2.480 

3.268 

3.622 

3.622 

Le 

.370 

.555 

.786 

1.043 

1.500 

Z 

3 

3 , 5* 

5 

5 

5 

Zt 

10 

10 

11 

12 

12 

h inch 

.030 

.044 

.057 

.070 

.100 


24

Straight 

BSW 


R 0.137P 

h 

Internal 

55° 

R 0.137P 

External 

Le 

L 

D 

D2 

Defined by: B.S.84:1956, DIN 259, ISO228/1:1982 

Tolerance class: Medium class A 


Pitch 

Thread 

Ordering Code 

EDP No. 


No. of Flutes 

Teeth 

tpi 

20 

18 

16 

14 

12 

11 

10 

9 

8 

7 

6 

5 

4.5 

Min. Dia. 

1/4” 

5/16” 

3/8” 

7/16” 

1/2” 

5/8” 

3/4” 

7/8” 

1” 

1 1/8” 

1 3/8” 

1 5/8” 

1 7/8” 


S3/16”.160”-EI20BSWTM... 

S1/4”.200”-EI18BSWTM... 

S1/4”.240”-EI16BSWTM... 

S5/16”.310”-EI14BSWTM... 

S5/16”.310”-EI12BSWTM... 

S3/8”.370”-EI11BSWTM... 

S1/2”.470”-EI10BSWTM... 

S1/2”.470”-EI9BSWTM... 

S5/8”.620”-EI8BSWTM... 

S5/8”.620”-EI7BSWTM... 

S5/8”.620”-EI6BSWTM... 

S3/4”.745”-EI5BSWTM... 

S3/4”.745”-EI4.5BSWTM... 

VTS 

80059 

80060 

80061 

80062/80232 

80063/80447 

80064 

80065 

80066 

80067 

80068 

80069 

80070 

80071 

D 

3/16 

1/4 

1/4 

5/16 

5/16 

3/8 

1/2 

1/2 

5/8 

5/8 

5/8 

3/4 

3/4 

D2 

.160 

.200 

.240 

.310 

.310 

.370 

.470 

.470 

.620 

.620 

.620 

.745 

.745 

L 

1.654 

2.244 

2.244 

2.480 

2.480 

2.835 

3.268 

3.268 

3.622 

3.622 

3.622 

4.095 

4.095 

Le 

.400 

.444 

.562 

.714 

.750 

.909 

1.100 

1.111 

1.500 

1.429 

1.500 

1.600 

1.555 

Z 

3 

3 

3 

3 , 5* 

3 , 5* 

5 

5 

5 

5 

5 

5 

5 

5 

Zt 

8 

8 

9 

10 

9 

10 

11 

10 

12 

10 

9 

8 

7 

h inch 

.032 

.035 

.040 

.046 

.053 

.058 

.064 

.071 

.080 

.091 

.107 

.128 

.142 


BSP 


R 0.137P 

Internal 

55° 

Le 

D 

D2 

h 

R 0.137P 

External 

L 


Tolerance class: Medium class 


Pitch 

Thread 

Ordering Code 

EDP No. 


No. of Flutes 

Teeth 

tpi 

Min. Dia. 


VTS 

D 

D2 

L 

Le 

Z 

Zt 

h inch 

28 

19 

14 

11 

1/16” 

1/4” 

1/2” 

1” 

S1/4”.240”-EI28BSPTM... 

S5/16”.310”-EI19BSPTM... 

S1/2”.470”-EI14BSPTM... 

S5/8”.620”-EI11BSPTM... 

80076 

80073/80234 

80074 

80075 


1/4 

5/16 

1/2 

5/8 

.240 

.310 

.470 

.620 

2.244 

2.480 

3.268 

3.622 

.571 

.737 

1.143 

1.364 

3 

3 , 5* 

5 

5 

16 

14 

16 

15 

.023 

.034 

.046 

.058 

25

Straight 

BSPT 


R0.137P 

27.5° 27.5° 

Internal 

Le 

D2 

90 ° 147' ° 

h 

R0.137P 

External 


Tolerance class: Standard BSPT 

L 

D 


Pitch 

Thread 

Ordering Code 

EDP No. 


No. of Flutes 

Teeth 

tpi 

28 

19 

14 

11 

Min. Dia. 

1/16” 

1/4” 

1/2” 

1” 


S1/4”.240”-EI28BSPTTM... 

S5/16”.310”-EI19BSPTTM... 

S1/2”.470”-EI14BSPTTM... 

S5/8”.620”-EI11BSPTTM... 

VTS 

80072 

80077/80235 

80078 

80079 

D 

1/4 

5/16 

1/2 

5/8 

D2 

.240 

.310 

.470 

.620 

L 

2.244 

2.480 

3.268 

3.622 

Le 

.393 

.579 

.786 

1.545 

Z 

3 

3 , 5* 

5 

5 

Zt 

11 

11 

11 

17 

h inch 

.023 

.034 

.046 

.058 


Pg 


R0.107P 

Internal 

80° 

Le 

D2 

R0.107P 

h 

D 

External 

L 

Defined by: DIN 40430 

Tolerance class: Standard 


Pitch 

Thread 

Ordering Code 

EDP No. 


No. of Flutes 

Teeth 

tpi 


VTS 

D 

D2 

L 

Le 

Z 

Zt 

h inch 

20 

18 

16 

Pg7 

Pg9, 11, 13.5, 16 

Pg21, 29, 36, 42, 48 

S5/16”.310”-EI20PGTM... 80090/80448 

S3/8”.370”-EI18PGTM... 80091 

S1/2”.470”-EI16PGTM... 80092 

5/16 

3/8 

1/2 

.310 

.370 

.470 

2.480 

2.835 

3.268 

.750 

.944 

1.125 

3 , 5* 

5 

5 

15 

17 

18 

.024 

.026 

.030 


26

Threading Tool 


About Thread Milling 

In order to perform a thread milling operation, a milling machine with three-axis control capable of helical interpolation 

is required. Helical interpolation is a CNC function producing tool movement along a helical path. This helical motion 

combines circular movement in one plane with a simultaneous linear motion in a plane perpendicular to the first. For 

example, the path from point A to point B (Fig. A) on the envelope of the cylinder combines a circular movement in 

the xy plane with a linear displacement in the z direction. 

On most CNC systems this function can be executed in two different ways: 

GO2: Helical interpolation in a clockwise direction 

GO3: Helical interpolation in a counter-clockwise direction 

Z 

D 

B 

Y 

p 

a 

A 

O 

X 

a: helix angle 

D: external diameter 

p: pitch 

Fig. A 

Fig. B 

The thread milling operation (Fig. B) consists of circular rotation of the tool around its own axis together with an orbiting 

motion along the bore or workpiece circumference. During one such orbit, the tool will shift vertically one pitch length. 

These movements combined with the insert geometry create the required thread form. 

There are two acceptable ways of approaching the workpiece with the tool to initiate production of the thread: 

tangential arc approach and radial approach. 

Tangential Arc Approach 

With this method, the tool enters and exits the workpiece smoothly. No marks are left on the workpiece and there is 

no vibration, even with harder materials. Although it requires slightly more complex programming than the radial 

approach (see below), this is the method recommended for machining the highest quality threads. 

Internal Thread 

External Thread 

2 

Do 

Workpiece 

D2 

2 

1 3 

6 4 

5 

D1 

Workpiece 

3 

4 

1 

6 

D2 

Threading Tool 

5 

1-2: rapid approach 

2-3: tool entry along tangential arc, with simultaneous 

feed along z-axis 

3-4: helical movement during one full orbit (360º). 

4-5: tool exit along tangential arc, with continuing 

feed along z-axis 

5-6: rapid return 

Note: 

Perform dry run above the material, before machining. 

27


Cutting Speeds Vc [ft/min] and Feed f [inch/tooth] 

(Not Including HTC & MilliPro HD) 

Unalloyed steel 

Material 

Low carbon (C=0.1-0.25 %) 

Medium carbon (C=0.25-0.55 %) 

High carbon (C=0.55-0.85 %) 

Hardness 

Brinell 

HB 

125 

150 

170 

Low alloy steel Non hardened 

180 

P 

(alloying elements < 5%) 

Hardened 

275 

Hardened 

350 

High alloy steel Annealed 

200 

(alloying elements > 5%) 

Hardened 

325 

Cast steel 

Low alloy (alloying elements 5%) 225 

Stainless steel Non hardened 

200 

Ferritic 

Hardened 

330 

Stainless steel Austenitic 

180 

Austenitic 

Super austenitic 

200 

Stainless steel Non hardened 

200 

Cast ferritic 

Hardened 

330 

M Stainless steel 

Cast austenitic 

Austenitic 

Hardened 

200 

330 

High temperature Annealed (Iron based) 

200 

alloys 

Aged (Iron based) 

280 

Annealed (Nickel or Cobalt based) 250 

Aged (Nickel or Cobalt based) 350 

Titanium alloys Pure 99.5 Ti 

400Rm 

a+b alloys 

1050Rm 

Extra hard steel Hardened & tempered 

55HRc 

Malleable Ferritic (short chips) 

130 

cast iron 

Pearlitic (long chips) 

230 

Grey cast iron 

Low tensile strength 

180 

High tensile strength 

260 

Nodular SG iron 

Ferritic 

160 

K 

Pearlitic 

260 

Aluminium alloys Non aging 

60 

Wrought Aged 

100 

Aluminium alloys 

Cast 

75 

Cast & aged 

90 

Aluminium alloys Cast Si 13-22% 

130 

Copper and Brass 

90 

copper alloys 

Bronze and non leaded copper 100 

*Recommendation: 

At tool entry, set the Feed f [inch/tooth] to 70% lower than the 

threading Feed. 

Vc[ft/min] 

Feed f [inch/tooth] * 

He-Lex 

Straight Flutes, 

MilliPro 

Deep Threading, 

Helicool Line 

Straight Deep HeliCool 

He-Lex 

Flutes Threading Line 

Coated Coated 

VTH VTS VTH 

260-820 165-590 195-395 .001-.006 .0004-.004 .001-.009 .0009-.011 

260-755 165-460 195-395 .001-.004 .0004-.003 .001-.006 .0008-.010 

260-655 165-395 195-295 .001-.003 .0004-.002 .001-.005 .0007-.009 

195-590 195-560 195-295 .001-.004 .001-.003 .001-.005 .0007-.008 

195-560 195-525 165-260 .001-.003 .001-.003 .001-.004 .0005-.006 

195-525 195-490 165-260 .0004-.001 .0002-.0004 .0004-.002 .0004-.004 

130-330 130-295 165-260 .001-.002 .0004-.001 .001-.003 .0004-.005 

100-260 100-230 165-260 .0004-.001 .0002-.0004 .0004-.002 .0004-.005 

260-820 230-655 230-295 .001-.004 .0004-.001 .001-.006 .0005-.006 

195-560 195-490 195-260 .0004-.001 .0002-.0004 .0004-.002 .0004-.004 

195-490 165-460 195-295 .002-.004 .0004-.002 .002-.006 .0004-.005 

195-395 165-360 165-260 .0004-.002 .0002-.0004 .0004-.003 .0004-.005 

195-460 195-425 195-295 .002-.004 .0003-.0008 .002-.006 .0004-.005 

195-425 165-395 165-260 .002-.004 .0003-.0008 .002-.006 .0004-.004 

195-525 165-490 195-295 .002-.004 .0004-.001 .002-.006 .0005-.006 

195-360 165-330 165-260 .001-.002 .0002-.0004 .001-.003 .0004-.004 

195-490 165-460 195-295 .002-.004 .0004-.001 .002-.006 .0004-.005 

195-330 165-295 165-260 .001-.002 .0002-.0004 .001-.003 .0004-.004 

100-195 100-165 195 .002-.004 .0003-.0008 .002-.006 .0003-.003 

65-165 65-130 165 .0004-.001 .0002-.0004 .0004-.002 .0002-.003 

50-115 50-100 115 .0004-.001 .0002-.0004 .0004-.002 .0002-.002 

50-100 50-80 100 .0004-.001 .0002-.0004 .0004-.002 .0002-.002 

130-260 100-230 100-165 .001-.002 .0003-.0008 .001-.003 .0002-.003 

65-165 65-150 80-115 .001-.002 .0003-.0008 .001-.003 .0002-.003 

50-150 50-115 150 .0002-.0004 .0001-.0002 .0002-.0006 .0002-.002 

230-525 195-490 165-260 .0004-.001 .0003-.0008 .0004-.002 .0005-.006 

195-490 165-460 195-295 .001-.002 .0002-.0004 .001-.003 .0004-.005 

230-525 165-460 230-330 .002-.004 .0003-.0008 .002-.006 .0004-.005 

130-395 130-360 195-295 .001-.002 .0002-.0004 .001-.003 .0004-.005 

130-360 130-330 230-330 .002-.004 .0003-.0008 .002-.006 .0004-.005 

130-330 130-295 195-295 .001-.002 .0002-.0004 .001-.003 .0004-.005 

655-985 490-820 195-820 .004-.010 .002-.006 .004-.015 .001-.017 

490-820 330-720 195-490 .004-.008 .001-.004 .004-.012 .001-.014 

330-655 260-490 195-820 .004-.008 .002-.006 .004-.012 .001-.014 

395-720 295-525 195-490 .004-.006 .001-.004 .004-.009 .001-.011 

655-985 490-820 820 .004-.008 .002-.006 .004-.012 .001-.014 

655-985 490-820 195-820 .004-.010 .002-.006 .004-.015 .001-.017 

330-820 330-720 195-490 .004-.008 .001-.004 .004-.012 .001-.014 

2 

Tool entry along tangential arc 

MilliPro 

.001-.005 

.001-.005 

.001-.005 

.001-.004 

.001-.003 

.001 

.001-.002 

.001 

.001-.004 

.001 

.001-.004 

.001 

.001-.004 

.001-.004 

.001-.004 

.001 

.001-.004 

.001 

.001-.004 

.001 

.001 

.001 

.001-.002 

.001-.003 

.0004 

.001 

.002 

.002-.004 

.002 

.002-.004 

.002 

.002-.006 

.002-.005 

.002-.005 

.001-.004 

.002-.004 

.002-.004 

.002-.004 

Example: 

Threading Feed: .012[inch/tooth] 

Tool entry Feed: .0035[inch/tooth] 

1 3 

6 4 

5 

28


Grades and their Applications 

Grade Applications 

VTH 

A general-purpose, heavy duty thread milling grade. 

TiCN coated for high resistance to wear. 

Helicool 

He-Lex 

HCR 


HCC 

MilliPro 

Grade 

VTS 

Applications 

MilliPro HD 

A general-purpose grade, specially designed for TM Solid Straight Flute cutters. 

TiAlN coated for high resistance to wear. 

Straight 

MilliPro HD Cutting Speeds 

Vc [ft/min] and Feed f [inch/tooth] 

P 

M 

K 

Material 

Low alloy steel 

(alloying elements < 5%) 

High alloy steel 

(alloying elements > 5%) 

Stainless steel 

Ferritic 


Cast ferritic 


Cast austenitic 

High temperature 

alloys 

Titanium alloys 

Extra hard steel 

Malleable 

cast iron 


Nodular SG iron 

Hardness 

HB, HRC 

Hardened 350HB 82-525 

Vc[ft/min] Feed f [inch/tooth] by Cutting Dia. =D2 

MilliPro 

Hard 

VTH 

Hardened 325HB 82-262 

Hardened 

Hardened 

Hardened 

Annealed (Nickel or Cobalt based ) 

Aged (Nickel or Cobalt based ) 

Pure 99.5 Ti 

a+b alloys 

Hardened & tempered 

Ferritic (short chips) 

Pearlitic (long chips) 

Low tensile strength 

High tensile strength 

Ferritic 

Pearlitic 

330HB 

330HB 

330HB 

250HB 

350HB 

400Rm 

1050Rm 

40-50HRc 

51-55HRc 

56-62HRc 

130HB 

230HB 

180HB 

260HB 

160HB 

260HB 

82-394 

82-361 

82-328 

49-115 

49-98 

82-230 

66-164 

82-230 

82-197 

82-164 

82-525 

82-492 

82-427 

82-328 

82-410 

82-295 

.059-.10 .10-.20 

.0016 

.0016 

.0012 

.0016 

.0012 

.0008 

.0020 

.0016 

.0020 

.0016 

.0016 

.0012 

.0020 

.0020 

.0016 

.0020 

.0016 

.0012 

.0024 

.0020 

.0024 

.0020 

.0020 

.0016 

.20-.30 .30-.35 .35-.45 

.0024 

.0024 

.0020 

.0024 

.0020 

.0016 

.0028 

.0024 

.0028 

.0024 

.0024 

.0020 

.0028 

.0028 

.0024 

.0028 

.0024 

.0020 

.0031 

.0028 

.0031 

.0028 

.0028 

.0024 

.0031 

.0031 

.0028 

.0031 

.0028 

.0024 

.0039 

.0031 

.0039 

.0031 

.0035 

.0028 

29


HTC Technical Data 

Recommended Grades, Cutting Speeds and Feeds 

Cast Iron 

Copper 

Aluminum / 

K 

Magnesium 

Plastics 

Vc [ft/min] fb [inch/rev] fz [inch/tooth] 

Hardness Strength 

Material 

Brinell (HB) (N-mm²) VTN VTS 76mm 712mm 76mm 712mm 


7150 7500 165-260 260-390 .004-.006 .006-.009 .001-.002 .002-.004 

Grey cast iron, heat treated 

150-300 500-1000 165-260 260-390 .004-.006 .006-.009 0.02-0.05 .002-.004 

Spher. graph. Cast Iron 

7200 7700 165-260 260-390 .004-.006 .006-.009 0.02-0.05 .002-.004 

Short Chips, Brass, Bronze, Red Brass 

7200 7700 330-980 — .004-.012 .002-.004 .001-.002 .002-.004 

Aluminum, Magnesium non-alloy 

7100 7350 330-1310 330-1310 .004-.010 .010-.012 .001-.002 .002-.004 

Aluminum, Wrought Alloy, Breaking Strain (A5) < 14% 7180 7600 330-1310 330-1310 .004-.010 .010-.012 .001-.002 .002-.004 

Aluminum, Wrought Alloy, Breaking Strain (A5) 14% 7180 7600 330-1310 330-1310 .001-.002 .002-.005 .001-.002 .002-.004 

Aluminum, Cast Alloy, S i

Ask for the VARDEX General Catalog 

Includes 

the 

complete 

TM 

Solid line 

TM Gen 

VARDEX TM Gen software - the fast 

and easy way to select the right tool and 

generate your CNC milling program. 

Software and updated versions can be 

downloaded from: www.vardexusa.com 

Vardex USA 

1149 Barberry Drive 

Janesville,WI 53545 U.S.A 

Tel: +1(608) 756-4930 

Fax: +1(608) 741-7125 

e-mail: tooling@vardexusa.com 

www.vardexusa.com 

Call us toll-free: 

1-800-828-8765 

Vargus Ltd. 

Head Office - Israel 

1 Hayotsrim Street 

Nahariya 22311 

Tel: +972 (0)4 985 5101 

Fax: +972 (0)4 985 5118 

E-mail: mrktg@vargus.com 

www.vargus.com 

9P189EA 

01/2008

Solid Carbide - Vargus

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