| Thread Size |
| ST2.9 |
ST3.5 |
ST4.2 |
ST4.8 |
ST5.5 |
ST6.3 |
|
| P |
Pitch |
| a |
max |
| dc |
max |
| min |
| c |
min |
| s |
max=nominal size |
| min |
| e |
min |
| k |
max=nominal size |
| min |
| kw |
min |
| r |
min |
| Drilling range(sheet or plate thickness) |
from |
| to |
|
| 1.1 |
1.3 |
1.4 |
1.6 |
1.8 |
1.8 |
| 1.1 |
1.3 |
1.4 |
1.6 |
1.8 |
1.8 |
| 6.30 |
8.3 |
8.8 |
10.5 |
11 |
13.5 |
| 5.80 |
7.6 |
8.1 |
9.8 |
10 |
12.2 |
| 0.40 |
0.6 |
0.8 |
0.9 |
1 |
1 |
| 4.00 |
5.5 |
7 |
8 |
8 |
10 |
| 3.82 |
5.32 |
6.78 |
7.78 |
7.78 |
9.78 |
| 4.28 |
5.96 |
7.59 |
8.71 |
8.71 |
10.95 |
| 2.80 |
3.4 |
4.1 |
4.3 |
5.4 |
5.9 |
| 2.50 |
3 |
3.6 |
3.8 |
4.8 |
5.3 |
| 1.3 |
1.5 |
1.8 |
2.2 |
2.7 |
3.1 |
| 0.1 |
0.1 |
0.2 |
0.2 |
0.25 |
0.25 |
| 0.7 |
0.7 |
1.75 |
1.75 |
1.75 |
2 |
| 1.9 |
2.25 |
3 |
4.4 |
5.25 |
6 |
|
| |
|
1,The function of the drilling point(diameter dp) is specified in ISO 10666.
2,Mateial:
a)Case hardening steel or heat treatable steel shall be used
b)Hardness:
The minimum surface hardness of drilling screws after heat treatment shall be 530 HV 0.3; The core hardness after heat treatment shall be: 320 HV 5 to 400 HV 5 for threads ≤ST4.2, 320 HV 10 to 400 HV 10 for threads > ST4.2; According to ISO 10666 |
Alternative history
DIN 7504K - 1982 DIN 7504K - 1995 DIN EN ISO 15480 - 2018
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