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Combined Tap & Drill Suggestions for Use: Set - up: These tools require no special equipment or adapters. They fit standard tool holders and may be used in multiple spindle, tapping operations equipped with reversing mechanisms to withdraw the tap. In other cases (including CNC machine centers), the combining of two operations greatly improve productivity subsequently reducing costs. As with any machining job, fixturing is extremely important and both the fixture and work piece must be checked to ensure rigidity. These tools are designed to drill and tap through holes up to two times the nominal diameter. The drill must protrude through the material before tapping commences. Speeds: Materials: Lubricants: Surface Treatments: These tools are designed to operate at speeds somewhere between the normal drilling and tapping speeds for the given material. Start with the suggested tapping speed, and then adjust the spindle R.P.M. upward or downward to find the optimum speed for that particular application. On NC or CNC machines both a fast drilling speed then a slower tapping speed can be programmed to maximize the capabilities of these tools These tools will work to advantage in any material where High Speed Steel tools will perform. Successful applications have included aluminum, brass, bronze, cast iron and zinc. Any good cutting fluid or tapping lubricant is generally satisfactory. Proper lubrication can greatly affect the tool life, cutting action, accuracy and thread quality. Special surface coatings may be added for improved performance, price upon request V 1.0 – November 2011 Page 66
NC & NF Combined Tap & Drill Right Hand High Speed Steel 2 Flute Machine Screw & Fractional Sizes Size EDP # Pitch Dia. Limits Overall Length Drill Size Thread Length Square Length Shank Diameter Size of Square #4-40 NC 79200 GH2 1.7/8" 0.0910" 3/8" 3/16" 0.141" 0.110" #4-48 NF 79201 GH2 1.7/8" 0.0945" 3/8" 3/16" 0.141" 0.110" #5-40 NC 79202 GH2 1.15/16" 0.1040" 13/32" 3/16" 0.141" 0.110" #5-44 NF 79203 GH2 1.15/16" 0.1060" 13/32" 3/16" 0.141" 0.110" #6-32 NC 79204 GH3 2" 0.1115" 7/16" 3/16" 0.141" 0.110" #6-40 NF 79205 GH2 2" 0.1170" 7/16" 3/16" 0.141" 0.110" #8-32 NC 79206 GH3 2.1/8" 0.1375" 1/2" 1/4" 0.168" 0.131" #8-36 NF 79207 GH2 2.1/8" 0.1405" 1/2" 1/4" 0.168" 0.131" #10-24 NC 79208 GH3 2.3/8" 0.1545" 5/8" 1/4" 0.194" 0.152" #10-32 NF 79209 GH3 2.3/8" 0.1635" 5/8" 1/4" 0.194" 0.152" #12-24 NC 79210 GH3 2.3/8" 0.1805" 21/32" 9/32" 0.220" 0.165" #12-28 NF 79211 GH3 2.3/8" 0.1860" 21/32" 9/32" 0.220" 0.165" 1/4"-20 NC 79212 GH3 2.1/2" 0.2080" 25/32" 5/16" 0.255" 0.191" 1/4"-28 NF 79213 GH3 2.1/2" 0.2200" 25/32" 5/16" 0.255" 0.191" 5/16"-18 NC 79214 GH3 2.27/32" 0.2660" 15/16" 3/8" 0.318" 0.238" 5/16"-24 NF 79215 GH3 2.27/32" 0.2770" 15/16" 3/8" 0.318" 0.238" 3/8"-16 NC 79216 GH3 3.3/8" 0.3225" 1.1/16" 7/16" 0.381" 0.286" 3/8"-24 NF 79217 GH3 3.3/8" 0.3395" 1.1/16" 7/16" 0.381" 0.286" 7/16"-14 NC 79218 GH3 3.3/4" 0.3770" 1.1/14" 13/32" 0.323" 0.242" 7/16"-20 NF 79219 GH3 3.3/4" 0.3955" 1.1/14" 13/32" 0.323" 0.242" 1/2"-13 NC 79220 GH3 4.1/16" 0.4350" 1.3/8" 7/16" 0.367" 0.275" 1/2"-20 NF 79221 GH3 4.1/16" 0.4580" 1.3/8" 7/16" 0.367" 0.275" 5/8"-11 NC 79222 GH3 5.1/16" 0.5480" 1.3/4" 9/16" 0.480" 0.360" V 1.0 – November 2011 Page 67
Page 1 and 2:
V 1.0 - November 2011 Product Catal
Page 3 and 4:
RIGHT HAND HIGH SPEED STEEL .......
Page 5 and 6:
RIGHT HAND HIGH SPEED STEEL 55º FU
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UNIFIED AND AMERICAN NATIONAL SCREW
Page 9 and 10:
Sales Terms & Conditions Changes: T
Page 11 and 12:
Taps NEF & NS Special Taps Right Ha
Page 13 and 14:
NEF & NS Special Taps Right Hand Hi
Page 15 and 16: Size NEF & NS Special Taps Right Ha
Page 17 and 18: Size NEF & NS Special Taps Right Ha
Page 19 and 20: NEF & NS Special Taps Right Hand Hi
Page 21 and 22: Metric Special Taps Right Hand High
Page 23 and 24: Size Metric Special Taps Right Hand
Page 25 and 26: Size Metric Special Taps Right Hand
Page 27 and 28: Tandem Acme Taps Right and Left Han
Page 29 and 30: Acme Hand Taps Right and Left Hand
Page 31 and 32: Trapezoidal Hand Taps Right Hand Hi
Page 33 and 34: + .005" O/S NC & NF Taps Right Hand
Page 35 and 36: + .020" O/S NC Taps Right Hand High
Page 37 and 38: Metric Extension Taps Right Hand Hi
Page 39 and 40: NC & NF Spiral Point Extension Taps
Page 41 and 42: NC & NF Small Shank Extension Taps
Page 43 and 44: Size GH# # of Flutes #6-32 NC #6-40
Page 45 and 46: Size 3/8"-24 NF 7/16"-14 NC 7/16"-2
Page 47 and 48: NC & NF Left Hand Taps High Speed G
Page 49 and 50: Metric Right Hand Straight Flute &
Page 51 and 52: Metric Right Hand Straight Flute &
Page 53 and 54: Metric Left Hand Straight Flute & S
Page 55 and 56: 30º Slow Spiral Flute Taps Right H
Page 57 and 58: Metric Roll Form Taps Right Hand Hi
Page 59 and 60: Metric S.T.I. Taps Right Hand High
Page 61 and 62: NPT INTERRUPTED THREAD TAPER PIPE T
Page 63 and 64: SPIRAL FLUTE NPT TAPER PIPE TAPS Ri
Page 65: Pipe Tap Dimensions (Straight and T
Page 69 and 70: Dies NS & NEF Special Round Adjusta
Page 71 and 72: NS & NEF Special Round Adjustable D
Page 77 and 78: NS & NEF Hex Rethreading Dies Right
Page 79 and 80: NS & NEF Hex Rethreading Dies Right
Page 81 and 82: Metric Special Round Dies Right Han
Page 83 and 84: Metric Special Round Dies Right Han
Page 85 and 86: Metric Special Hex Rethreading Dies
Page 87 and 88: Hex Rethreading Dies for AFBMA Lock
Page 89 and 90: NC & NF Round Split Adjustable Dies
Page 91 and 92: NC & NF Round Split Adjustable Dies
Page 93 and 94: NC & NF Hex Rethreading Dies Right
Page 95 and 96: Metric Right Hand Round Dies Right
Page 97 and 98: Metric Right Hand Round Dies Right
Page 99 and 100: Size Metric Hex Dies Right & Left H
Page 101 and 102: Metric Round Dies Left Hand High Sp
Page 103 and 104: NPT & NPS Hex Rethreading Pipe Dies
Page 105 and 106: Size BSW & BSF Taps & Dies Right Ha
Page 107 and 108: BSPT British Taper Pipe Taps Right
Page 109 and 110: British Pipe Tap Drill Sizes Size B
Page 111 and 112: Standard Straight Shank Straight Fl
Page 113 and 114: Standard Straight Shank Straight Fl
Page 115 and 116: Straight Shank Straight Flute Chuck
Page 117 and 118:
Straight Shank Straight Flute Chuck
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Page 121 and 122:
Page 123 and 124:
Page 125 and 126:
Page 127 and 128:
Page 129 and 130:
Page 131 and 132:
Page 133 and 134:
Spiral Flute Hand Reamers Left Hand
Page 135 and 136:
Carbide Tipped Metric Chucking Ream
Page 137 and 138:
Metric Taper Pin Reamers Straight S
Page 139 and 140:
6" O/L Taper Pipe Reamers Spiral Fl
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T Handle Ratchet Tap Holders - Long
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Pipe Tap Extractors Size Complete E
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Style "B" Tap Extensions Tap Size E
Page 147 and 148:
Metric Round Die Sets Right Hand Hi
Page 149 and 150:
NC & NF Tap & Die Sets Right Hand H
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NPT & NPS Pipe Tap Sets BSPP & BSPT
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Type B33 Expanding Hand Reamers, Pi
Page 155 and 156:
Suggestions for the Use of T & J Ex
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Table 302 Standard Tap Dimensions S
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Table 302 Notes Tap sizes .395" and
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Table 303 Standard Tap Dimensions N
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THREAD CONSTANTS Figures in the tab
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TAP RECOMMENDATIONS FOR CLASSES OF
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BASIC THREAD DIMENSIONS USCTI Table
Page 169 and 170:
STANDARD PIPE TAP DIMENSIONS STRAIG
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Standard System of Tap Marking Taps
Page 173 and 174:
Standard System of Tap Marking Thre
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Ordering Special Reamers Refer to p
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