| Tube OD | BSPT MalePipe Thread | SAE / MSStraight Thread | L | A/F-1 | A/F-2 | Dawsons-TechPart No. |
| B |
| Inch | Metric | P | UN / UNF | mm | Inch | Inch | Inch | Metric |
| 1/4 | 6 | 1/8 x 28 | 7/16 x 20 | 31.0 | 1/2 | 9/16 | 37SMC-4-2RT | 37SMC-6M-2RT |
| 1/4 | 6 | 1/4 x 19 | 7/16 x 20 | 35.7 | 9/16 | 9/16 | 37SMC-4-4RT | 37SMC-6M-4RT |
| 5/16 | 8 | 1/4 x 19 | 1/2 x 20 | 38.4 | 9/16 | 5/8 | 37SMC-5-4RT | 37SMC-8M-4RT |
| 3/8 | 10 | 1/4 x 19 | 9/16 x 18 | 39.7 | 9/16 | 11/16 | 37SMC-6-4RT | 37SMC-10M-4RT |
| 3/8 | 10 | 3/8 x 19 | 9/16 x 18 | 39.7 | 3/4 | 11/16 | 37SMC-6-6RT | 37SMC-10M-6RT |
| 1/2 | 12 | 1/4 x 19 | 3/4 x 16 | 42.8 | 3/4 | 7/8 | 37SMC-8-4RT | 37SMC-12M-4RT |
| 1/2 | 12 | 3/8 x 19 | 3/4 x 16 | 42.8 | 3/4 | 7/8 | 37SMC-8-6RT | 37SMC-12M-6RT |
| 5/8 | 14 | 1/2 x 14 | 7/8 x 14 | 51.2 | 7/8 | 1 | 37SMC-10-8RT | 37SMC-14M-8RT |
| - | 15 | 1/2 x 14 | 7/8 x 14 | 51.2 | 7/8 | 1 | - | 37SMC-15M-8RT |
| - | 16 | 1/2 x 14 | 7/8 x 14 | 51.2 | 7/8 | 1 | - | 37SMC-16M-8RT |
| 3/4 | 20 | 1/2 x 14 | 1-1/16 x 12 | 53.2 | 1-1/16 | 1-1/4 | 37SMC-12-8RT | 37SMC-20M-8RT |
| 3/4 | 18 | 3/4 x 14 | 1-1/16 x 12 | 53.2 | 1-1/16 | 1-1/4 | 37SMC-12-12RT | 37SMC-18M-12RT |
| - | 20 | 3/4 x 14 | 1-1/16 x 12 | 53.2 | 1-1/16 | 1-1/4 | - | 37SMC-20M-12RT |
| 1 | 25 | 3/4 x 14 | 1-5/16 x 12 | 55.7 | 1-1/4 | 1-1/2 | 37SMC-16-12RT | 37SMC-25M-12RT |
| 1 | 25 | 1 x 11 | 1-5/16 x 12 | 62.5 | 1-7/16 | 1-1/2 | 37SMC-16-16RT | 37SMC-25M-16RT |
Dimensions are for reference only and are subject to change.
