UNI 6954 Pan head tapping screws with cross recess H and Z, Form C
Dimensions for UNI 6954 Pan head tapping screws with cross recess H and Z, Form C
| Thread size |
p |
a |
dk |
k |
r |
rf |
cross recess |
Type H |
Type Z |
Y max |
| m |
Penetration depth |
m |
Penetration depth |
| max |
nominal=max |
min |
nominal=max |
min |
max |
approx |
No. |
approx |
min |
max |
approx |
min |
max |
Type C |
Type F |
| ST 2.2 |
0.8 |
0.8 |
4.2 |
3.9 |
1.8 |
1.55 |
0.3 |
3.4 |
1 |
2.6 |
0.86 |
1.32 |
2.4 |
1.1 |
1.35 |
2 |
1.6 |
| ST 2.9 |
1.1 |
1.1 |
5.6 |
5.3 |
2.2 |
1.95 |
0.4 |
4.4 |
1 |
3 |
1.35 |
1.8 |
2.9 |
1.58 |
1.83 |
2.6 |
2.1 |
| ST 3.5 |
1.3 |
1.3 |
6.9 |
6.54 |
2.6 |
2.35 |
0.5 |
5.4 |
2 |
4.2 |
1.4 |
2.03 |
3.9 |
1.47 |
1.93 |
3.2 |
2.5 |
| ST 3.9 |
1.3 |
1.3 |
7.5 |
7.14 |
2.8 |
2.55 |
0.5 |
5.8 |
2 |
4.4 |
1.63 |
2.26 |
4.1 |
1.7 |
2.16 |
3.5 |
2.7 |
| ST 4.2 |
1.4 |
1.4 |
8.2 |
7.84 |
3.05 |
2.75 |
0.6 |
6.2 |
2 |
4.6 |
1.8 |
2.46 |
4.3 |
1.88 |
2.34 |
3.7 |
2.8 |
| ST 4.8 |
1.6 |
1.6 |
9.5 |
9.14 |
3.55 |
3.25 |
0.7 |
7.2 |
2 |
5 |
2.26 |
2.87 |
4.7 |
2.28 |
2.74 |
4.3 |
3.2 |
| ST 5.5 |
1.8 |
1.8 |
10.8 |
10.37 |
3.95 |
3.65 |
0.8 |
8.2 |
3 |
6.5 |
2.49 |
3.15 |
6.2 |
2.51 |
2.97 |
5 |
3.6 |
| ST 6.3 |
1.8 |
1.8 |
12.5 |
12.07 |
4.55 |
4.25 |
0.9 |
9.5 |
3 |
7.1 |
3 |
3.66 |
6.7 |
3.02 |
3.48 |
6 |
3.6 |