|
Thumb Screw (type A) ANSI/ASME B18.17 | |||||||||||
|
Nomial size |
Threads per Inch |
Head Width(A) |
Head Height(B) |
Head Thickness(C) |
Shoulder Dia.(E) |
Practical Screw Lengths(L) | |||||
Max |
Max |
Max |
Min |
Max |
Min |
Max |
Min |
Max |
Min | ||
|
6 |
32 |
.31 |
.29 |
.33 |
.31 |
.05 |
.04 |
.25 |
.23 |
.75 |
.25 |
|
8 |
32 |
.36 |
.34 |
.38 |
.36 |
.06 |
.05 |
.31 |
.29 |
.75 |
.38 |
|
10 |
24
& 32 |
.42 |
.40 |
.48 |
.46 |
.06 |
.05 |
.35 |
.32 |
1.00 |
.38 |
|
12 |
24 |
.48 |
.46 |
.54 |
.52 |
.06 |
.05 |
.40 |
.38 |
1.00 |
.38 |
|
1/4 |
20 |
.55 |
.52 |
.64 |
.61 |
.07 |
.05 |
.47 |
.44 |
1.50 |
.50 |
|
5/16 |
18 |
.70 |
.67 |
.78 |
.75 |
.09 |
.07 |
.59 |
.56 |
1.50 |
.50 |
|
3/8 |
16 |
.83 |
.80 |
.95 |
.92 |
.11 |
.09 |
.76 |
.71 |
2.00 |
.75 |
