What requirements does the Whitworth pipe thread according to DIN EN ISO 228-1 meet?
This standard describes cylindrical Whitworth pipe threads with a flank angle of 55°, which contain standardized dimensions for various thread sizes. They are commonly used in pipeline connection technology to ensure a safe and tight connection.
Data table of the Whitworth pipe thread according to DIN EN ISO 228-1
Here you will find the dimensions of the cylindrical Whitworth pipe thread according to DIN EN ISO 228-1 with a flank angle of 55°.
| Thread | Pitch | Core diameter [mm] | Number of threads per 25.4 mm |
| G1/8" | 0.907 | 8.565 | 28 |
| G1/4" | 1.337 | 11.445 | 19 |
| G3/8" | 1.337 | 14.950 | 19 |
| G1/2" | 1.814 | 18.633 | 14 |
| G5/8" | 1.814 | 20.587 | 14 |
| G3/4" | 1.814 | 24.120 | 14 |
| G1" | 2.309 | 30.292 | 11 |
| G1 1/4" | 2.309 | 38.935 | 11 |
| G1 1/2" | 2.309 | 44.846 | 11 |
| G2" | 2.309 | 56.657 | 11 |
| G2 1/2" | 2.309 | 72.227 | 11 |
| G3" | 2.309 | 84.927 | 11 |
| G3 1/2" | 2.309 | 98.012 | 11 |
| G4" | 2.309 | 110.073 | 11 |
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