Withworth pipe thread DIN EN 10226-1/2
Here you will find the dimensions of the tapered Withworth pipe thread according to DIN EN 10226-1/2 with a flank angle of 55°.
| Male thread Diameter | Female thread Diameter | Pitch | Core Hole Diameter [mm] | TPI (Threads per inch) |
| R1/16" | Rp1/16" | 0,907 | 6,561 | 28 |
| R1/8" | Rp1/8" | 0,907 | 8,566 | 28 |
| R1/4" | Rp1/4" | 1,337 | 11,445 | 19 |
| R3/8" | Rp3/8" | 1,337 | 14,950 | 19 |
| R1/2" | Rp1/2" | 1,814 | 18,631 | 14 |
| R3/4" | Rp3/4" | 1,814 | 24,117 | 14 |
| R1" | Rp1" | 2,309 | 30,291 | 11 |
| R1 1/4" | Rp1 1/4" | 2,309 | 38,952 | 11 |
| R1 1/2" | Rp1 1/2" | 2,309 | 44,845 | 11 |
| R2" | Rp2" | 2,309 | 56,656 | 11 |
| R2 1/2" | Rp2 1/2" | 2,309 | 72,226 | 11 |
| R3" | Rp3" | 2,309 | 84,926 | 11 |
| R4" | Rp4" | 2,309 | 110,072 | 11 |
| R5" | Rp5" | 2,309 | 135,472 | 11 |
| R6" | Rp6" | 2,309 | 160,872 | 11 |
