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Metric Coarse
ISO 529
METRIC
Table Reference
Number
Metric/Imperial
Nominal
Major
Diameter d
Pitch
Overall
Length
Lmm
Length of
Thread
lmm
Shank
Diameter
d 1mm
Neck
Diameter
d 2mm
Neck
Length
l 1mm
Square A/F
mm
Square
Length
l 2mm
M1.6 0.35 41 8 2.50 - 5 2.00 4
M2 0.40 41 8 2.50 - 5 2.00 4
M2.2 0.45 44.5 9.5 2.80 - 6 2.24 5
M2.5 0.45 44.5 9.5 2.80 - 6 2.24 5
M2.6 0.45 44.5 9.5 2.80 - 6 2.24 5
M3 0.50 48 11 3.15 2.12 7 2.50 5
M3.5 0.60 50 13 3.55 2.50 8 2.80 5
M4 0.70 53 13 4.00 2.80 8 3.15 6
M4.5 0.75 53 13 4.50 3.15 8 3.55 6
M5 0.80 58 16 5.00 3.55 9 4.00 7
M6 1.00 66 19 6.30 4.50 11 5.00 8
M7 1.00 66 19 7.10 5.30 11 5.60 8
M8 1.25 72 22 8.00 6.00 13 6.30 9
M9 1.25 72 22 9.00 7.10 14 7.10 10
M10 1.50 80 24 10.00 7.50 15 8.00 11
M11 1.50 85 25 8.00 - - 6.30 9
M12 1.75 89 29 9.00 - - 7.10 10
M14 2.00 95 30 11.20 - - 9.00 12
M16 2.00 102 32 12.50 - - 10.00 13
M18 2.50 112 37 14.00 - - 11.20 14
M20 2.50 112 37 14.00 - - 11.20 14
M22 2.50 118 38 16.00 - - 12.50 16
M24 3.00 130 45 18.00 - - 14.00 18
M27 3.00 135 45 20.00 - - 16.00 20
M30 3.50 138 48 20.00 - - 16.00 20
M33 3.50 151 51 22.40 - - 18.00 22
M36 4.00 162 57 25.00 - - 20.00 24
M39 4.00 170 60 28.00 - - 22.40 26
M42 4.50 170 60 28.00 - - 22.40 26
M45 4.50 187 67 31.50 - - 25.00 28
M48 5.00 187 67 31.50 - - 25.00 28
M52 5.00 200 70 35.50 - - 28.00 31
M56 5.50 200 70 35.50 - - 28.00 31
Straight Flute (Coarse)
Pitch Diameter
Tolerance
M1.6 M2 M2.2 M2.5 M2.6 M3 M3.5 M4 M4.5 M5 M6 M7 M8 M9
Class of Fit
No. of Flutes 3 3 3 3 3 3 3 3 3 3 3 4 4 4
Style 1 1 1 1 1 2 2 2 2 2 2 2 2 2
M10 M11 M12 M14 M16 M18 M20 M22 M24 M27 M30 M33 M36 M39
Available in:
Taper Lead
Second Lead
Bottom Lead
4
No. of Flutes 4 4 4 4 4 4 4 4 4 4 4 4 4 6
Style 2 3 3 3 3 3 3 3 3 3 3 3 3 3
M42 M45 M48 M52 M56
No. of Flutes 6 6 6 6 6
Style 3 3 3 3 3
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