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GB /T 15856.5 - 2023 Hexagon Washer Head drilling Screws With Tapping Screw Thread


Unit: 毫米(mm)
Weight Calculator
L
Nominal Diameter
d
ST2.9 ST3.5 ST4.2
P Pitch
a max
c min
dc max
min
e min
k max=nominal size
min
kw min
r1 min
r2 max
s max=nominal size
min
Drilling range(sheet or plate thickness)
1.1 1.3 1.4
1.1 1.3 1.4
0.4 0.6 0.8
6.30 8.3 8.8
5.80 7.6 8.1
4.28 5.96 7.59
2.80 3.4 4.1
2.50 3 3.6
1.3 1.5 1.8
0.1 0.1 0.2
0.2 0.25 0.3
4.00 5.5 7
3.82 5.32 6.78
0.7 0.7 1.75
1.9 2.25 3
Lg (min)
- - -
①,The function of the drilling point (diameter dp) is specified in GB/T 3098.11.
Alternative history GB /T 15856.5 - 2002 GB /T 15856.5 - 2023
Equivalent standard
GB GB /T 15856.5
ISO ISO 15480
DIN DIN EN ISO 15480
UNI UNI 8117
Some of the above standards may be approximate equivalent. If there is any objection, the standard original shall prevail.

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