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Click Specification

Plastic diamond knurlhead screws

GB /T 840 - 1988

Display drawing:

国标GB /T840 - 1988 GB840 840GB Plastic diamond knurlhead screws
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 .
Screw Thread
d
M4 M5 M6 M8 M10 M12 M16
P pitch
dk
k
dp max
min
z max
min
0.7 0.8 1 1.25 1.5 1.75 2
12 16 20 25 28 32 40
5 6 6 8 8 10 12
2.5 3.5 4 5.5 7 8.5 12
2.25 3.2 3.7 5.2 6.64 8.14 11.57
2.25 2.75 3.25 4.3 5.3 6.3 8.36
2 2.5 3 4 5 6 8
Weight of per 1000 steel products(≈kg)
- - - - - - -

Alternative history

GB /T 840 - 1988