GB /T 6560 - 1986 Cross Recessed Pan Head Thread Forming Screws


Unit: mm
国标GB /T6560 - 1986 GB6560 6560GB Cross Recessed Pan Head Thread Forming Screws
Screw Thread
d
M2 M2.5 M3 M4 M5 M6
P Pitch
a max
b min
da max
dk max
min
k max
min
Socket No.
M1 Ref.
Penetration depth max
min
x max
0.4 0.45 0.5 0.7 0.8 1
0.8 0.9 1 1.4 1.6 2
10 12 18 24 30 35
2.6 3.1 3.6 4.7 5.7 6.8
4 5 5.6 8 9.5 12
3.7 4.7 5.3 7.64 9.14 11.57
1.6 2.1 2.4 3.1 3.7 4.6
1.46 1.96 2.26 2.92 3.52 4.3
0 1 1 2 2 3
1.9 2.7 3 4.4 4.9 6.9
1.2 1.55 1.8 2.4 2.9 3.6
0.9 1.15 1.4 1.9 2.4 3.1
1 1.1 1.25 1.75 2 2.5
Alternative history
Similar Standards
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