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nominal size |
threads per inch |
d max. |
L length on production |
dz max. |
S nom. |
T min. |
proof torque min. (lbf.ft) |
|---|---|---|---|---|---|---|---|
| 1/4UNC | 20 | 0.2490 | 1/4-1" | 0.312 | 1/8 | 0.125 | 3.30 |
| 5/16UNC | 18 | 0.3113 | 5/16-1" | 0.172 | 5/32 | 0.156 | 6.25 |
| 3/8UNC | 16 | 0.3737 | 3/8-1" | 0.212 | 3/16 | 0.140,0.188 | 11.00 |
| 1/2BSW | 12 | 0.4985 | 1/2-1"1/2 | 0.291 | 1/4 | 0.250 | 23.50 |
| 5/8UNC | 11 | 0.6234 | 5/8-1" | 0.371 | 5/16 | 0.312 | 50.00 |
nominal thread size |
1/4UNC | 5/16UNC | 3/8UNC |
|---|---|---|---|
threads per inch |
20 | 18 | 16 |
| d max. |
0.2490 | 0.3113 | 0.3737 |
| L length on production |
1/4-1" | 5/16-1" | 3/8-1" |
| dz max. |
0.312 | 0.172 | 0.212 |
| S nom. |
1/8 | 5/32 | 3/16 |
| T min. |
0.125 | 0.156 | 0.140, 0.188 |
| proof torque min. (lbf.ft) |
3.30 | 6.25 | 11.00 |
nominal thread size |
1/2BSW | 5/8UNC |
|---|---|---|
threads per inch |
12 | 11 |
| d max. |
0.4985 | 0.6234 |
| L length on production |
1/2-1"1/2 | 5/8-1" |
| dz max. |
0.291 | 0.371 |
| S nom. |
1/4 | 5/16 |
| T min. |
0.250 | 0.312 |
| proof torque min. (lbf.ft) |
23.50 | 50.00 |