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Hexagon socket head cap screws

GB 70 - 1976

Display drawing:

 *Models with different eras.

Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.
Screw Thread
d
M4 M5 M6 M8 M10 M12 (M14) M16
P Pitch
dk max
min
k Nominal Size
max
min
s Nominal Size
max
min
t min
max
0.7 0.8 1 1.25 1.5 1.75 2 2
7 8.5 10 12.5 15 18 21 24
6.8 8.3 9.8 12.26 14.76 17.76 20.72 23.72
4 5 6 8 10 12 14 16
4.24 5.24 6.24 8.29 10.29 12.35 14.35 16.35
3.76 4.76 5.76 7.71 9.71 11.65 13.65 15.65
3 4 5 6 8 10 12 12
3.12 4.16 5.16 6.16 8.2 10.2 12.24 12.24
3.02 4.03 5.03 6.03 8.04 10.04 12.05 12.05
2 2.5 3 4 5 6 7 8
2.6 3.1 3.6 4.75 5.75 6.75 7.9 8.9
Weight of per 1000 steel products(≈kg)
- - - - - - - -
Length of Thread b
- - - - - - - -
Screw Thread
d
(M18) M20 (M22) M24 (M27) M30 M36 M42
P Pitch
dk max
min
k Nominal Size
max
min
s Nominal Size
max
min
t min
max
2.5 2.5 2.5 3 3 3.5 4 4.5
27 30 33 36 40 42 50 58
26.72 29.72 32.66 35.66 39.66 41.66 49.66 57.6
18 20 22 24 27 30 36 42
18.35 20.42 22.42 24.42 27.42 30.42 36.5 42.5
17.65 19.58 21.58 23.58 26.58 29.58 35.5 41.5
14 14 17 17 19 19 24 27
14.24 14.24 17.24 17.24 19.28 19.28 24.28 27.28
14.05 14.05 17.05 17.05 19.06 19.06 24.06 27.06
9 10 11 12 14 15 18 21
9.9 10.9 12.1 13.1 15.1 16.1 19.1 22.3
Weight of per 1000 steel products(≈kg)
- - - - - - - -
Length of Thread b
- - - - - - - -

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