Search results
G-Series pipe thread chart (British standard pipe parallel was BSPP & BSPF) and PF-Series pipe thread chart (Japanese pipe parallel).
BSPP G 1/4 : Brith Pipe (BSP) Thread Dimensions and Tolerances. All the relevant data for this tread in one spot.
In the modern standard metric version, it is simply a size number, where listed diameter size is the major outer diameter of the external thread. For a taper thread, it is the diameter at the "gauge length" (plus/minus one thread pitch) from the small end of the thread.
NOMINAL THREAD SIZE (inch) MAJOR DIAMETER (mm) MINOR DIAMETER (mm) TPI G 1/16 G 1/8 G 1/4 G 3/8 G 1/2 G 3/4 G 1 G 2 G 3 6.561 8.566 11.445 14.950 18.631 24.117 30.291 56.656 84.962 7.723 9.728 13.157 16.662 20.955 26.441 33.249 59.614 87.884 28 28 19 19 14 14 11 11 11 British Standard Pipe - BSPP & BSPT ... BSPP-and-BSPT-thread-charts Created Date:
Subtract approx. 1/4″ (6mm) from thread diameter measurement for nominal pipe size. Pitch is Threads Per Inch (TPI). “Gas”, “R” & “G” also refer to BSP.
British Standard Pipe BSP thread chart, BSP thread chart showing TPI and drill sizes.
The most common G 1/4″ threads at WIKA are surely the G 1/4 in accordance with EN 837 or DIN 3852-E. But in addition there are many other pressure connections which are all specified as G 1/4″. For example G 1/4 Ermeto and G 1/4 DIN 3852-A, just to name two.
