Table 1. STS code and dimensions
d
1
(mm)
Code
L (mm)
b (mm)
A (mm)
d
s
d
2
d
c
8
HBS8120
120
60
60
5.8
5.4
6.8
10
HBS10120
120
60
60
7
6.4
8.4
12
HBS12120
120
80
40
8
6.8
9
A: head with drive + shank + shank cutter, b: thread + tip, STS: self-tapping screws.