BSP Threads - Whitworth

 

The BSP thread (British Standard Pipe) is also known as a pipe thread in Europe. The thread sizes are marked with the abbreviation "G". The thread is not self-sealing, both the internal and the external thread have a cylindrical or parallel thread form. There are different sealants which are placed between the threads to seal the thread.

 

BSP Threads Chart

Thread

Sizes

Thread Pitch

(mm)

Outer Diameter

(mm)

Core Hole Diameter

(mm)

Gear number

pro Inch

 G 1/8" 0,907 9,73 8,80 28
 G 1/4" 1,337 13,16 11,80 19
 G 3/8" 1,337 16,66 15,25 19
 G 1/2" 1,814  20,95 19,00 14
 G 5/8" 1,814 22,91 21,00 14
 G 3/4" 1,814 26,44 24,50 14
 G 7/8" 1,814 30,20 28,25 14
 G 1" 2,309 33,25 30,75 11
 G 1 1/8" 2,309 37,90 35,30 11
 G 1 1/4" 2,309 41,91 39,25 11
 G 1 3/8" 2,309 44,32 41,70 11
 G 1 1/2" 2,309 47,80 45,25 11
 G 1 3/4" 2,309 53,74 51,10 11
 G 2" 2,309 59,61 57,00 11
 G 2 1/4" 2,309 65,71 63,10 11
 G 2 1/2" 2,309 75,18 72,60 11
 G 2 3/4" 2,309 81,53 78,90 11
 G 3" 2,309 87,88 85,30 11
 G 3 1/4" 2,309 93,98 91,50 11
 G 3 1/2" 2,309 100,33 97,70 11
 G 3 3/4" 2,309 106,68 104,00 11
 G 4" 2,309 113,03 110,40 11

* All information without guarantee.

Tip !

Pipe thread Sealing cord or sealing tape.