BS EN ISO 228-1: 2003 Table 1 Thread dimensions G 1 1/8. 37.897 2.309 11. A. 37.897 37.537 36.418 36.238 34.939.

Tolerance on major diameter. Internal thread th2. External thread th2. Internal thread th1. External thread th. Designation of thread. Number of threads in 25.4 mm. Pitch P. Height of thread h.

BSPF Threads ( British Standard Pipe Parrallel Fine ) G 1/16" - G 1" G 1 1/8" - G 3" G 3 1/4" - -G 6". Size Thread Designation. Major Dia.

British Thread Gages. British standard pipe is also referred to as BSP . These type of gages are used for joining or sealing pipes. BSP previously was compliant to a standard called BS-2779. This has since been replaced with ISO standards. British threads fall into two categories, parallel and taper.

British Standard Pipe thread (G) ; G 1/8", 28, 9.73, 8.57 ; G 1/4", 19, 13.16, 11.45.

Male Thd. d3, Thread Height H1, Tap Drill Diameter mm. G1/8, 1/8", BSPP, 9.728, 0.907, 28, 9.147 

02/02/  · When the diameter smaller than 1/4”, the value is indicated by a number, like #1 or No.1. 2.Thread sizes in metric are specified by diameter and pitch. The metric thread sizes are

Guide includes diagrams and BSP thread chart. British Standard Pipe (BSP) is a family of technical standards for threads that has been 1/8 – 28, -02 

British Standard Pipe(BSPP, BSPF) Thread Form r = Basic Radius = * 137329 p h = Basic Depth of Thread = *640327 p p = Pitch = 1/t.p.i. (Threads per Inch) ISO 228, DIN 259, BS2779, JIS B0202 In Japan this thread is known as (PF) Use prefix G for parallel thread.

NPT/NPS threads have a 60° angle and have flattened peaks and valleys (Sellers thread form) where as BSP threads have a 55° angle and have rounded peaks and valleys (Whitworth thread form). NPT and BSP thread pitches (threads per inch) are listed below. To determine pitch, use a thread gauge or count the number of threads that fall into a 1

11/02/2004 · G (supposedly from German/English "Gas") are the cylindrical pipe threads used on originally inch based pipes. The internal (conical) pipe thread is is described as "GCon". The size designation (like 3/8") does not mean actual thread OD; it is the internal diameter of the pipe, on which it is used. To be more exact - the original internal