ANSI/ASME B 18.3.1M - 1986 (R2008) Dimensions Of Metric Socket Head Cap Screws


Unit: mm
Thread Size
d
M1.6 M2 M2.5 M3 M4 M5 M6 M8 M10
P Thread Pitch
ds max
min
dc max
min
k max
min
s Nominal Size
t min
0.35 0.4 0.45 0.5 0.7 0.8 1 1.25 1.5
1.60 2.00 2.50 3.00 4.00 5.00 6.00 8.00 10.00
1.46 1.86 2.36 2.86 3.82 4.82 5.82 7.78 9.78
3.00 3.80 4.50 5.50 7.00 8.50 10.00 13.00 16.00
2.87 3.65 4.33 5.32 6.80 8.27 9.74 12.70 15.67
1.60 2.00 2.50 3.00 4.00 5.00 6.00 8.00 10.00
1.52 1.91 2.40 2.89 3.88 4.86 5.85 7.83 9.81
1.50 1.50 2.00 2.50 3.00 4.00 5.00 6.00 8.00
0.80 1.00 1.25 1.50 2.00 2.50 3.00 4.00 5.00
Alternative history
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