What characteristics does the Whitworth pipe thread according to DIN EN 10226-1/2 have?
This standard describes conical Whitworth pipe threads with a flank angle of 55°, which are commonly used for pressure-tight connections in pipeline installations.
Data table of Whitworth pipe thread according to DIN EN 10226-1/2
Here you will find the dimensions of the conical Whitworth pipe thread according to DIN EN 10226-1/2 with a flank angle of 55°.
| External thread Designation | Internal thread Designation | Pitch | Core diameter [mm] | Number of threads per 25.4 mm |
| 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 |
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