Thumb Screws
Thumb Screws
Nominal Size or Basic Screw Diameter³ |
Threads per inch |
A Head Width |
B Head Height |
C Head Thickness |
C¹ Head Thickness |
L Practical Screw Lengths |
|||||
---|---|---|---|---|---|---|---|---|---|---|---|
Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | ||
6 | 32 | 0.45 | 0.43 | 0.28 | 0.26 | 0.08 | 0.06 | 0.03 | 0.02 | 1.00 | 0.25 |
8 | 32 | 0.51 | 0.49 | 0.32 | 0.30 | 0.09 | 0.07 | 0.04 | 0.02 | 1.00 | 0.38 |
10 | 24 & 32 | 0.58 | 0.54 | 0.39 | 0.36 | 0.10 | 0.08 | 0.05 | 0.03 | 2.00 | 0.38 |
12 | 24 | 0.71 | 0.67 | 0.45 | 0.43 | 0.11 | 0.09 | 0.05 | 0.03 | 2.00 | 0.38 |
1/4 | 20 | 0.83 | 0.80 | 0.52 | 0.48 | 0.16 | 0.14 | 0.06 | 0.03 | 2.50 | 0.50 |
5/16 | 18 | 0.96 | 0.91 | 0.64 | 0.60 | 0.17 | 0.14 | 0.09 | 0.06 | 3.00 | 0.50 |
3/8 | 16 | 1.09 | 1.03 | 0.71 | 0.67 | 0.22 | 0.18 | 0.11 | 0.08 | 3.00 | 0.75 |
7/16 | 14 | 1.40 | 1.35 | 0.96 | 0.91 | 0.27 | 0.24 | 0.14 | 0.11 | 4.00 | 1.00 |
1/2 | 13 | 1.54 | 1.46 | 1.09 | 1.03 | 0.33 | 0.29 | 0.15 | 0.11 | 4.00 | 1.00 |
Nominal Size or Basic Screw Diameter³ |
Threads per inch |
A Head Width |
B Head Height |
C Head Thickness |
C¹ Head Thickness |
L Practical Screw Lengths |
|||||
---|---|---|---|---|---|---|---|---|---|---|---|
Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | ||
6 | 32 | 0.45 | 0.43 | 0.28 | 0.26 | 0.08 | 0.06 | 0.03 | 0.02 | 1.00 | 0.25 |
8 | 32 | 0.51 | 0.49 | 0.32 | 0.30 | 0.09 | 0.07 | 0.04 | 0.02 | 1.00 | 0.38 |
10 | 24 & 32 | 0.58 | 0.54 | 0.39 | 0.36 | 0.10 | 0.08 | 0.05 | 0.03 | 2.00 | 0.38 |
12 | 24 | 0.71 | 0.67 | 0.45 | 0.43 | 0.11 | 0.09 | 0.05 | 0.03 | 2.00 | 0.38 |
1/4 | 20 | 0.83 | 0.80 | 0.52 | 0.48 | 0.16 | 0.14 | 0.06 | 0.03 | 2.50 | 0.50 |
5/16 | 18 | 0.96 | 0.91 | 0.64 | 0.60 | 0.17 | 0.14 | 0.09 | 0.06 | 3.00 | 0.50 |
3/8 | 16 | 1.09 | 1.03 | 0.71 | 0.67 | 0.22 | 0.18 | 0.11 | 0.08 | 3.00 | 0.75 |
7/16 | 14 | 1.40 | 1.35 | 0.96 | 0.91 | 0.27 | 0.24 | 0.14 | 0.11 | 4.00 | 1.00 |
1/2 | 13 | 1.54 | 1.46 | 1.09 | 1.03 | 0.33 | 0.29 | 0.15 | 0.11 | 4.00 | 1.00 |