Cylindric whitworth-pipe threads ACC. DIN/ISO 228

Cylindric whitworth-pipe threads ACC. DIN/ISO 228

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"280.9070.5819.7289.1478.5668
G 1/4"191.3370.85613.15712.30111.44512
G 3/8"191.3370.85616.66215.80614.9512
G 1/2"141.8141.16220.95519.79318.63114
G 5/8"141.8141.16222.91121.74920.587
G 3/4"141.8141.16226.44125.27924.11716
G 1"112.3091.47933.24931.7730.29118
G 1 1/8"112.3091.47937.89736.41834.939
G 1 1/4"112.3091.47941.9140.43138.95220
G 1 1/2"112.3091.47947.80346.32444.84522
G 1 3/4"112.3091.47953.74652.26750.788
G 2"112.3091.47959.61458.13556.65624
G 2 1/4"112.3091.47965.7164.23162.752
G 2 1/2"112.3091.47975.18473.70572.226
G 2 3/4"112.3091.47981.53480.05578.576
G 3"112.3091.47987.88486.40584.926
G 3 1/2"112.3091.479100.3398.85197.372
G 4"112.3091.479113.03111.551110.072
G 4 1/2"112.3091.479125.73124.251122.772
G 5"112.3091.479138.43136.951135.472
G 5 1/2"112.3091.479151.13149.651148.172
G 6"112.3091.479163.83162.351160.872