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Cross recessed countersunk head self-drilling tapping screws

GB /T 15856.2 - 1995

Display drawing:

国标GB /T15856.2 - 1995 GB15856.2 15856.2G Cross recessed countersunk head self-drilling tapping screws

 *Models with different eras.

Screw Thread
d
ST2.9 ST3.5 ST4.2 ST4.8 ST5.5 ST6.3
P Pitch
dk max
min
k max
Socket No.
Drilling range(thickness)
1.1 1.3 1.4 1.6 1.8 1.8
5.5 7.3 8.4 9.3 10.3 11.3
5.2 6.9 8.0 8.9 9.9 10.9
1.7 2.35 2.6 2.8 3 3.15
1 2 2 2 3 3
0.7 0.7 1.75 1.75 1.75 2
1.9 2.25 3 4.4 5.25 6