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(Non-preferred) dimensions in parentheses.

Metric Hexagon Socket Countersunk Head Cap Screws (ASTM F835M / F879M / A1-70)

ASME/ANSI B 18.3.5M - 1986 (R2008)

Display drawing:

美标ASME/ANSI B18.3.5M - 1986 (R2008) ASME Metric Hexagon Socket Countersunk Head Cap Screws (ASTM F835M / F879M / A1-70)
Nominal Length L Tips:seclect Nominal Length L and get Thread length.
Thread Size
d
M3 M4 M5 M6 M8 M10 M12 (M14) M16 M20
P Thread Pitch
ds max
min
dk max
min
k Ref.
s Nominal Size
max
min
e min
t min
b min
α 0,+2°
0.5 0.7 0.8 1 1.25 1.5 1.75 2 2 2.5
3 4 5 6 8 10 12 14 16 20
2.86 3.82 4.82 5.82 7.78 9.78 11.73 13.73 15.73 19.67
6.72 8.96 11.20 13.44 17.92 22.40 26.88 30.24 33.60 40.32
5.35 7.8 9.75 11.7 15.6 19.5 23.4 26.18 28.96 34.60
1.86 2.48 3.10 3.72 4.96 6.20 7.44 8.12 8.80 10.16
2 2.5 3 4 5 6 8 10 10 12
2.045 2.560 3.071 4.084 5.084 6.095 8.115 10.127 10.127 12.146
2.02 2.52 3.02 4.02 5.02 6.02 8.025 10.025 10.025 12.032
2.3 2.87 3.44 4.58 5.72 6.86 9.15 11.5 11.5 13.8
1.1 1.5 1.9 2.2 3 3.6 4.3 4.7 4.8 5.6
18 20 22 24 28 32 36 40 44 52
90° 90° 90° 90° 90° 90° 90° 90° 90° 90°
Length of Thread b
- - - - - - - - - -

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