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| nominal size |
threads per inch |
A max. |
H max. |
d max. |
L length on production |
S nom. |
T min. |
recommended seating torque (Ibf.ft) |
|---|---|---|---|---|---|---|---|---|
| 1/4UNC | 20 | 0.375 | 0.2500 | 0.2490 | 3/8-1"1/4 | 3/16 | 0.120 | 13.8 |
| 5/16UNC | 18 | 0.469 | 0.3125 | 0.3113 | 1/2-1"1/2 | 1/4 | 0.151 | 28.5 |
| 3/8UNC | 16 | 0.562 | 0.3750 | 0.3737 | 5/8-1"1/2 | 5/16 | 0.182 | 50.6 |
| 1/2UNC | 13 | 0.750 | 0.5000 | 0.4985 | 3/4-2" | 3/8 | 0.245 | 123.5 |
| 5/8UNC | 11 | 0.938 | 0.6250 | 0.6234 | 1"-2" | 1/2 | 0.307 | 232.5 |
| 3/4UNC | 10 | 1.125 | 0.7500 | 0.7482 | 1"1/2-2"1/2 | 5/8 | 0.370 | 412.5 |
| 7/16BSW | 14 | 0.625 | 0.4370 | 0.4361 | 1"-2" | 5/16 | 0.213 | 81 |
| 1/2BSW | 12 | 0.750 | 0.5000 | 0.4985 | 3/4-2" | 3/8 | 0.245 | 123.5 |
nominal size |
1/4UNC | 5/16UNC | 3/8UNC |
|---|---|---|---|
threads per inch |
20 | 18 | 16 |
| A max. |
0.375 | 0.469 | 0.562 |
| H max. |
0.2500 | 0.3125 | 0.3750 |
| d max. |
0.2490 | 0.3113 | 0.3737 |
| L length on production |
3/8-1"1/4 | 1/2-1"1/2 | 5/8-1"1/2 |
| S nom. |
3/16 | 1/4 | 5/16 |
| T min. |
0.120 | 0.151 | 0.182 |
| recommended seating torque (Ibf.ft) |
13.8 | 28.5 | 50.6 |
nominal thread size |
1/2UNC | 5/8UNC | 3/4UNC |
|---|---|---|---|
threads per inch |
13 | 11 | 10 |
| A max. |
0.750 | 0.938 | 1.125 |
| H max. |
0.5000 | 0.6250 | 0.7500 |
| d max. |
0.4985 | 0.6234 | 0.7482 |
| L length on production |
3/4-2" | 1"-2" | 1"1/2-2"1/2 |
| S nom. |
3/8 | 1/2 | 5/8 |
| T min. |
0.245 | 0.307 | 0.370 |
| recommended seating torque (Ibf.ft) |
123.5 | 232.5 | 412.5 |
nominal thread size |
7/16BSW | 1/2BSW |
|---|---|---|
threads per inch |
14 | 12 |
| A max. |
0.625 | 0.750 |
| H max. |
0.4370 | 0.5000 |
| d max. |
0.4361 | 0.4985 |
| L length on production |
1"-2" | 3/4-2" |
| S nom. |
5/16 | 3/8 |
| T min. |
0.213 | 0.245 |
| recommended seating torque (Ibf.ft) |
81 | 123.5 |