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GB /T 6561 - 2014 Cross Recessed Countersunk Head Thread Rolling Screws

Weight Calculator Message Error Correction 中文版

Unit: 毫米(mm)
Weight Calculator
L
Thread Size
d
M2 M2.5 M3
P Pitch
a max
b min
dk Theoretical max
Actual max=nominal size
min
k max=nominal size
r max
x max
Socket No.
M1 Ref.
Penetration depth Type H max
min
M2 Ref.
Penetration depth Type Z max
min
0.4 0.45 0.5
0.8 0.9 1
25 25 25
4.4 5.5 6.3
3.8 4.7 5.5
3.5 4.4 5.2
1.2 1.5 1.65
0.5 0.6 0.8
1 1.1 1.25
0 1 1
1.9 2.7 2.9
1.2 1.55 1.8
0.9 1.25 1.4
1.9 2.5 2.8
1.2 1.47 1.73
0.95 1.22 1.48
Thread Length
b
- - -
Alternative history GB /T 6561 - 1986 GB /T 6561 - 2014

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