|
Thumb Screw (type B) ANSI/ASME B18.17 | |||||||||||
|
Nomial size |
Threads per Inch |
Head Width(A) |
Head Height(B) |
Head Thickness(C) |
Head Thickness(D) |
Practical Screw Lengths(L) | |||||
Max |
Max |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min | ||
|
6 |
32 |
.45 |
.43 |
.28 |
.26 |
.08 |
.06 |
.03 |
.02 |
1.00 |
.25 |
|
8 |
32 |
.51 |
.49 |
.32 |
.30 |
.09 |
.07 |
.04 |
.02 |
1.00 |
.38 |
|
10 |
24
& 32 |
.58 |
.54 |
.39 |
.36 |
.10 |
.08 |
.05 |
.03 |
2.00 |
.38 |
|
12 |
24 |
.71 |
.67 |
.45 |
.43 |
.11 |
.09 |
.05 |
.03 |
2.00 |
.38 |
|
1/4 |
20 |
.83 |
.80 |
.52 |
.48 |
.16 |
.14 |
.06 |
.03 |
2.50 |
.50 |
|
5/16 |
18 |
.96 |
.91 |
.64 |
.60 |
.17 |
.14 |
.09 |
.06 |
3.00 |
.50 |
|
3/8 |
16 |
1.09 |
1.03 |
.71 |
.67 |
.22 |
.18 |
.11 |
.08 |
3.00 |
.75 |
|
7/16 |
14 |
1.40 |
1.35 |
.96 |
.97 |
.27 |
.24 |
.14 |
.11 |
4.00 |
1.00 |
|
1/2 |
13 |
1.54 |
1.46 |
1.09 |
1.03 |
.33 |
.29 |
.15 |
.11 |
4.00 |
1.00 |
