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Cross Recessed Countersunk Head Self-drilling Tapping Screws

GB /T 15856.2 - 1995

Display drawing:

 *Models with different eras.

Nominal Length L Tips:seclect Nominal Length L and get .
Screw Thread
d
ST2.9 ST3.5 ST4.2 ST4.8 ST5.5 ST6.3
P Pitch
a max
dk max
min
k max
r
Socket No.
M1 Ref.
Penetration depth Type H min
max
M2 Ref.
Penetration depth Type Z min
max
Drilling range(thickness)
dp
1.1 1.3 1.4 1.6 1.8 1.8
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 8.9 9.9 10.9
1.7 2.35 2.6 2.8 3 3.15
1.2 1.4 1.6 2 2.2 2.4
1 2 2 2 3 3
3.2 4.4 4.6 5.2 6.6 6.8
1.7 1.9 2.1 2.7 2.8 3
2.1 2.4 2.6 3.2 3.3 3.5
3.2 4.3 4.6 5.1 6.5 6.8
1.6 1.75 2.05 2.6 2.75 3
2 2.2 2.5 3.05 3.2 3.45
0.7 0.7 1.75 1.75 1.75 2
1.9 2.25 3 4.4 5.25 6
2.3 2.8 3.6 4.1 4.8 5.8
Lg, min
- - - - - -