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The Parts And Units Of Jigs And Fixtures.inner Hex Screw For Plastic Fixtures

GB /T 2257 - 1991

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国标GB /T2257 - 1991 GB2257 2257GB The Parts And Units Of Jigs And Fixtures.inner Hex Screw For Plastic Fixtures
Screw Thread
d
M12 M16 M20 M24
P Pitch
L
D
e
s Nominal Size
max
min
d1
L4
L1
L2
L3
1.25 1.5 1.5 1.5
25/30 30/35 35/40 45/50
7.2 9.5 12 14
6.86 9.15 11.43 13.72
6 8 10 12
6.095 8.115 10.115 12.142
6.02 8.025 10.025 12.032
M6 左 M10 左 M12 左 M16 左
10 12 14 18
8 10 12 16
5 6 6 8
4 5 5 6

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