DIN 7971
DIN 7971 , Slotted Pan Head Self-tapping Screws standard.
| Size |
ST 2.2 |
ST 2.9 |
ST 3.5 |
ST 4.2 |
ST 4.8 |
ST 5.5 |
ST 6.3 |
ST 8 |
| P |
|
0.8 |
1.1 |
1.3 |
1.4 |
1.6 |
1.8 |
1.8 |
2.1 |
| da |
max. |
2.8 |
3.5 |
4.1 |
4.9 |
5.5 |
6.3 |
7.1 |
9.2 |
| dk |
max. |
4 |
5.6 |
7 |
8 |
9.5 |
11 |
12 |
16 |
| min. |
3.7 |
5.3 |
6.6 |
7.6 |
9.1 |
10.6 |
11.6 |
15.6 |
| k |
max. |
1.3 |
1.8 |
2.1 |
2.4 |
3 |
3.2 |
3.6 |
4.8 |
| min. |
1.1 |
1.6 |
1.9 |
2.2 |
2.7 |
2.9 |
3.3 |
4.5 |
| n |
max. |
0.7 |
1 |
1.2 |
1.51 |
1.51 |
1.91 |
1.91 |
2.31 |
| min. |
0.56 |
0.86 |
1.06 |
1.26 |
1.26 |
1.66 |
1.66 |
2.06 |
| r |
min. |
0.1 |
0.1 |
0.1 |
0.2 |
0.2 |
0.25 |
0.25 |
0.4 |
| t |
min. |
0.5 |
0.7 |
0.8 |
1 |
1.2 |
1.3 |
1.4 |
1.9 |
| y |
Type C |
2 |
2.6 |
3.2 |
3.7 |
4.3 |
5 |
6 |
7.5 |
| Type F |
1.6 |
2.1 |
2.5 |
2.8 |
3.2 |
3.6 |
3.6 |
4.2 |
