BSP Taps, "G" Series British Standard Pipe Parallel

  • $48.51 USD


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BSPP Tap HSS (High Speed Steel)

55 degree Whitworth Thread Form. Whitworth Pipe Threads are used almost exclusively by countries which are otherwise on the metric system.

"G" Series British Standard Pipe - Parallel ( Straight ) BSP or BSPF Also referred to as British Gas, British Pipe Parallel or Parallel Fastening thread. Various Symbols: BSP, BSPP, BSSPI, BSPF, BSPG, PS, R, G.

We have the largest selection in stock.

Please contact us for special sizes

Suggested tap drill sizes for BSPP taps

Nominal Size
(inches)

T P I

Major Diameter
(inches)

Tapping Drill Size

 

 

 

BSPP

 

 

 

 

1/16

28

0.304

6.6 mm

 Letter drill G

1/8

28

0.383

8.8 mm

 11/32 inch

1/4

19

0.518

11.8 mm

 29/64"

3/8

19

0.656

15.25 mm

 19/32"

1/2

14

0.825

19.00 mm

 
3/4"

5/8

14

0.902

21 mm

 53/64"

3/4

14

1.041

24.5 mm

 31/32"

7/8

14

1.189

28.25 mm

 1-7/64"

1 inch

11

1.309

30.75 mm

 1-13/64"

 1-1/4"

11

 1.650

 39.50 mm

 1-35/64"

 1-1/2"

11

1.882

45.5 mm

 1-25/32"

1-3/4"

11

2.116

51.00 mm

 2"

2"

11

2.347

57 mm

 2-1/4"

 


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