Thread | Whitworth-pipe thread acc. DIN/ISO 228 |
Abbreviation | G |
Designation | ISO 228-G 1/2″ ISO 228-G 1/2″ A |
Type of thread | inner thread cylindric outside thread cylindric (Tol. class A) |
Application | Pipe thread, for connections not sealing in the thread |
Description | This thread suits mainly for a mechanical connection of fittings and armatures. The sealing of the connection will be effected by a mechanical pressing-connection of the two sealing surfaces outside of the threads or via intersertation of a suitable seal. The screw-in tap of size A (with sealing ring), of the size B (with sealing rim) and of size E (acc. special agreement) and the correspondent screwing in holes of size X (with discharge) and size Y (with nut), each acc. DIN 3852 part 2 (see pages 8 – 9) show G-threads acc. to this norm. |
thread | number of threads | P | h | max. outside Ø to suit male threads | effective Ø | min. core Ø to suit female threads | i |
---|---|---|---|---|---|---|---|
G 1/8" | 28 | 0.907 | 0.581 | 9.728 | 9.147 | 8.566 | 8 |
G 1/4" | 19 | 1.337 | 0.856 | 13.157 | 12.301 | 11.445 | 12 |
G 3/8" | 19 | 1.337 | 0.856 | 16.662 | 15.806 | 14.95 | 12 |
G 1/2" | 14 | 1.814 | 1.162 | 20.955 | 19.793 | 18.631 | 14 |
G 5/8" | 14 | 1.814 | 1.162 | 22.911 | 21.749 | 20.587 | |
G 3/4" | 14 | 1.814 | 1.162 | 26.441 | 25.279 | 24.117 | 16 |
G 1" | 11 | 2.309 | 1.479 | 33.249 | 31.77 | 30.291 | 18 |
G 1 1/8" | 11 | 2.309 | 1.479 | 37.897 | 36.418 | 34.939 | |
G 1 1/4" | 11 | 2.309 | 1.479 | 41.91 | 40.431 | 38.952 | 20 |
G 1 1/2" | 11 | 2.309 | 1.479 | 47.803 | 46.324 | 44.845 | 22 |
G 1 3/4" | 11 | 2.309 | 1.479 | 53.746 | 52.267 | 50.788 | |
G 2" | 11 | 2.309 | 1.479 | 59.614 | 58.135 | 56.656 | 24 |
G 2 1/4" | 11 | 2.309 | 1.479 | 65.71 | 64.231 | 62.752 | |
G 2 1/2" | 11 | 2.309 | 1.479 | 75.184 | 73.705 | 72.226 | |
G 2 3/4" | 11 | 2.309 | 1.479 | 81.534 | 80.055 | 78.576 | |
G 3" | 11 | 2.309 | 1.479 | 87.884 | 86.405 | 84.926 | |
G 3 1/2" | 11 | 2.309 | 1.479 | 100.33 | 98.851 | 97.372 | |
G 4" | 11 | 2.309 | 1.479 | 113.03 | 111.551 | 110.072 | |
G 4 1/2" | 11 | 2.309 | 1.479 | 125.73 | 124.251 | 122.772 | |
G 5" | 11 | 2.309 | 1.479 | 138.43 | 136.951 | 135.472 | |
G 5 1/2" | 11 | 2.309 | 1.479 | 151.13 | 149.651 | 148.172 | |
G 6" | 11 | 2.309 | 1.479 | 163.83 | 162.351 | 160.872 |