UNI 6955 Cross recessed countersunk head tapping screws, Form C
Dimensions for UNI 6955 Cross recessed countersunk head tapping screws, Form C
| Thread size |
p |
a |
dk |
k |
r |
cross recess |
Type H |
Type Z |
Y max |
| m |
Penetration depth |
m |
Penetration depth |
| max |
nominal=max |
min |
approx |
max |
No. |
approx |
min |
max |
approx |
min |
max |
Type C |
Type F |
| ST 2.2 |
0.8 |
0.8 |
4.3 |
4 |
1.3 |
0.8 |
1 |
2.5 |
1.02 |
1.32 |
2.4 |
1.1 |
1.35 |
2 |
1.6 |
| ST 2.9 |
1.1 |
1.1 |
5.5 |
5.2 |
1.7 |
1.1 |
1 |
3 |
1.4 |
1.7 |
2.9 |
1.48 |
1.73 |
2.6 |
2.1 |
| ST 3.5 |
1.3 |
1.3 |
6.8 |
6.44 |
2.1 |
1.4 |
2 |
4.2 |
1.62 |
2.12 |
3.9 |
1.6 |
2.06 |
3.2 |
2.5 |
| ST 3.9 |
1.3 |
1.3 |
7.5 |
7.14 |
2.3 |
1.5 |
2 |
4.6 |
2.03 |
2.53 |
4.1 |
1.85 |
2.31 |
3.5 |
2.7 |
| ST 4.2 |
1.4 |
1.4 |
8.1 |
7.74 |
2.5 |
1.6 |
2 |
4.7 |
2.11 |
2.62 |
4.3 |
2.05 |
2.51 |
3.7 |
2.8 |
| ST 4.8 |
1.6 |
1.6 |
9.5 |
9.14 |
3 |
1.9 |
2 |
5.1 |
2.59 |
3.1 |
4.7 |
2.64 |
3.1 |
4.3 |
3.2 |
| ST 5.5 |
1.8 |
1.8 |
10.8 |
10.37 |
3.4 |
2.1 |
3 |
6.8 |
2.95 |
3.53 |
6.2 |
2.72 |
3.18 |
5 |
3.6 |
| ST 6.3 |
1.8 |
1.8 |
12.4 |
11.97 |
3.8 |
2.4 |
3 |
7.1 |
3.33 |
3.91 |
6.7 |
3.38 |
3.84 |
6 |
3.6 |