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(Non-preferred) dimensions in parentheses.

Metric Hexagon Socket Cheese Head Screws

BS 4168-1 - 1981

Display drawing:

英标BS 4168-1 - 1981 BS4168-1 4168-1BS Metric Hexagon Socket Cheese Head Screws
英标BS 4168-1 - 1981 BS4168-1 4168-1BS Metric Hexagon Socket Cheese Head Screws
Screw Thread
d
M1.6 M2 M2.5 M3 M4 M5 M6 M8
P Pitch
b ref.
dk For plain heads max
For knurled heads max
min
ds max
min
k max
min
s max
min
t min
0.35 0.4 0.45 0.5 0.7 0.8 1 1.25
15 16 17 18 20 22 24 28
3 3.8 4.5 5.5 7 8.5 10 13
3.14 3.98 4.68 5.68 7.22 8.72 10.22 13.27
2.86 3.62 4.32 5.32 6.78 8.28 9.78 12.73
1.6 2 2.5 3 4 5 6 8
1.46 1.86 2.36 2.86 3.82 4.82 5.82 7.78
1.6 2 2.5 3 4 5 6 8
1.46 1.86 2.36 2.86 3.82 4.82 5.7 7.64
1.545 1.545 2.045 2.56 3.08 4.095 5.095 6.095
1.52 1.52 2.02 2.52 3.02 4.02 5.02 6.02
0.7 1 1.1 1.3 2 2.5 3 4
Screw Thread
d
M10 M12 (M14) M16 M20 M24 M30 M36
P Pitch
b ref.
dk For plain heads max
For knurled heads max
min
ds max
min
k max
min
s max
min
t min
1.5 1.75 2 2 2.5 3 3.5 4
32 36 40 44 52 60 72 84
16 18 21 24 30 36 45 54
16.27 18.27 21.33 24.33 30.33 36.39 45.39 54.46
15.73 17.73 20.67 23.67 29.67 35.61 44.61 53.54
10 12 14 16 20 24 30 36
9.78 11.73 13.73 15.73 19.67 23.67 29.67 35.61
10 12 14 16 20 24 30 36
9.64 11.57 13.57 15.57 19.48 23.48 29.48 35.38
8.115 10.115 12.142 14.142 17.23 19.275 22.275 27.275
8.025 10.025 12.032 14.032 17.05 19.065 22.065 27.065
5 6 7 8 10 12 15.5 19

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