| Inch size | Dash size | Thread Size | Male Thread O.D. | (in) | Female thread O.D | (in) |
|---|---|---|---|---|---|---|
| 1/8 | -2 | 5/16 - 24 | 5/16 | 0.31 | 9/32 | 0.27 |
| 3/16 | -3 | 3/8 - 24 | 3/8 | 0.38 | 11/32 | 0.34 |
| 1/4 | -4 | 7/16 - 20 | 7/16 | 0.44 | 13/32 | 0.39 |
| 5/16 | -5 | 1/2 - 20 | 1/2 | 0.50 | 15/32 | 0.45 |
| 3/8 | -6 | 9/16 - 18 | 9/16 | 0.56 | 17/32 | 0.51 |
| 1/2 | -8 | 3/4 - 16 | 3/4 | 0.75 | 11/16 | 0.69 |
| 5/8 | -10 | 7/8 - 14 | 7/8 | 0.88 | 13/16 | 0.81 |
| 3/4 | -12 | 1 1/16 - 12 | 1 1/16 | 1.06 | 1 | 0.98 |
| 7/8 | -14 | 1 3/16 - 12 | 1 3/16 | 1.19 | 1 1/8 | 1.10 |
| 1 | -16 | 1 5/16 - 12 | 1 5/16 | 1.31 | 1 1/4 | 1.23 |
| 1 1/4 | -20 | 1 5/8 - 12 | 1 5/8 | 1.63 | 1 9/16 | 1.54 |
| 1 1/2 | -24 | 1 7/8 - 12 | 1 7/8 | 1.88 | 1 13/16 | 1.79 |
| 2 | -32 | 2 1/2 - 12 | 2 1/2 | 2.50 | 2 7/16 | 2.42 |