| Tube OD | NPT MalePipe Size | SAE / MSStraight Thread | L1 | L2 | A/F | Dawsons-TechPart No. |
| A |
| Inch | Metric | P | UN / UNF | mm | mm | Inch | Inch | Metric |
| 1/8 | - | 1/8 x 27 | 5/16 x 24 | 19.6 | 18.3 | 7/16 | 37MBT-2-2N | - |
| 3/16 | - | 1/8 x 27 | 3/8 x 24 | 21.1 | 18.3 | 7/16 | 37MBT-3-2N | - |
| 1/4 | 6 | 1/8 x 27 | 7/16 x 20 | 22.6 | 19.8 | 7/16 | 37MBT-4-2N | 37MBT-6M-2N |
| 1/4 | 6 | 1/4 x 18 | 7/16 x 20 | 26.9 | 27.7 | 9/16 | 37MBT-4-4N | 37MBT-6M-4N |
| 5/16 | 8 | 1/8 x 27 | 1/2 x 20 | 24.1 | 19.8 | 9/16 | 37MBT-5-2N | 37MBT-8M-2N |
| 5/16 | 8 | 1/4 x 18 | 1/2 x 20 | 26.9 | 27.7 | 9/16 | 37MBT-5-4N | 37MBT-8M-4N |
| 3/8 | 10 | 1/8 x 27 | 9/16 x 18 | 26.9 | 22.8 | 5/8 | 37MBT-6-2N | 37MBT-10M-2N |
| 3/8 | 10 | 1/4 x 18 | 9/16 x 18 | 26.9 | 27.7 | 9/16 | 37MBT-6-4N | 37MBT-10M-4N |
| 3/8 | 10 | 3/8 x 18 | 9/16 x 18 | 29.0 | 31.0 | 3/4 | 37MBT-6-6N | 37MBT-10M-6N |
| 3/8 | 10 | 1/2 x 14 | 9/16 x 18 | 31.2 | 37.3 | 7/8 | 37MBT-6-8N | 37MBT-10M-8N |
| 1/2 | 12 | 1/4 x 18 | 3/4 x 16 | 31.8 | 31.0 | 13/16 | 37MBT-8-4N | 37MBT-12M-4N |
| 1/2 | 12 | 3/8 x 18 | 3/4 x 16 | 31.8 | 31.0 | 3/4 | 37MBT-8-6N | 37MBT-12M-6N |
| 1/2 | 12 | 1/2 x 14 | 3/4 x 16 | 33.7 | 37.3 | 7/8 | 37MBT-8-8N | 37MBT-12M-8N |
| 1/2 | 12 | 3/4 x 14 | 3/4 x 16 | 36.0 | 40.4 | 1-1/8 | 37MBT-8-12N | 37MBT-12M-12N |
| 5/8 | 16 | 3/8 x 18 | 7/8 x 14 | 36.8 | 32.5 | 15/16 | 37MBT-10-6N | 37MBT-16M-6N |
| 5/8 | 16 | 1/2 x 14 | 7/8 x 14 | 36.8 | 37.3 | 7/8 | 37MBT-10-8N | 37MBT-16M-8N |
| 5/8 | 16 | 3/4 x 14 | 7/8 x 14 | 38.9 | 40.4 | 1-1/8 | 37MBT-10-12N | 37MBT-16M-12N |
| 3/4 | 18 | 1/2 x 14 | 1-1/16 x 12 | 41.0 | 40.4 | 1-1/8 | 37MBT-12-8N | 37MBT-18M-8N |
| 3/4 | 18 | 3/4 x 14 | 1-1/16 x 12 | 41.0 | 40.4 | 1-1/16 | 37MBT-12-12N | 37MBT-18M-12N |
| - | 20 | 3/4 x 14 | 1-1/16 x 12 | 41.0 | 40.4 | 1-1/16 | - | 37MBT-20M-12N |
| 7/8 | - | 3/4 x 14 | 1-3/16 x 12 | 45.7 | 42.9 | 1-5/16 | 37MBT-14-12N | - |
| 1 | 25 | 3/4 x 14 | 1-5/16 x 12 | 46.0 | 45.2 | 1-3/8 | 37MBT-16-12N | 37MBT-25M-12N |
| 1 | 25 | 1 x 11-1/2 | 1-5/16 x 12 | 46.0 | 50.0 | 1-5/16 | 37MBT-16-16N | 37MBT-25M-16N |
Dimensions are for reference only and are subject to change.
