| Male Tapered O.D | | Female Tapered I.D.
|
| Thread Size | MM | Frac. | MM | Frac.
|
| 1/8 - 28 | 9.5 | 3/8 | 8.7 | 11/32
|
| 1/4 - 19 | 13.5 | 17/32 | 11.9 | 15/32
|
| 3/8 - 19 | 16.7 | 21/32 | 15.1 | 19/32
|
| 1/2 - 14 | 20.6 | 13/16 | 19.1 | 3/4
|
| 5/8 - 14 | 23.0 | 29/32 | 20.6 | 13/16
|
| 3/4 - 14 | 26.2 | 1 1/32 | 23.0 | 29/32
|
| 1 - 11 | 33.3 | 1 5/16 | 30.9 | 1 7/32
|
| 1 1/4 - 11 | 42.1 | 1 21/32 | 34.9 | 1 3/8
|
| 1 1/2 - 11 | 47.6 | 1 7/8 | 45.2 | 1 25/32
|
| 2 - 11 | 59.5 | 2 11/32 | 57.2 | 2 1/4
|
| The BSPP male connection has straight threads and a 30° seat.
|
| The female BSPP connection has straight threads and a 30° cone seat.
|
| The seal is made when line contact is made between the 30° male and female seats.
|
| The threads retain the connection.
|
| Note: The BSPP is similar to NPSM connectors but not interchangeable. |