BSPT Taps, "Rc" Series British Standard Taper Pipe

  • $143.35 USD


BSPT Taps 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.

"Rc: Series British Standard Pipe - Taper- BSPT Also referred to as British Standard Taper Pipe or Pipe Taper, or Conical Thread. 1:16 Tapered Thread. Taper is 3/4" taper per foot ( 1 in 16 on the diameter) Various Symbols: BSPT, BSPTr, PT, KR, Rc.

We have the largest selection in stock.

Please contact us for special sizes

 

Suggested tap drill sizes for BSPT taps

Nominal Size
(inches)

T P I

Major Diameter
(inches)

Tapping Drill Size

 

 

 

BSPT

 

 

 

 

1/16

28

0.304

 

 

1/8

28

0.383

 8.4mm

21/64"

1/4

19

0.518

11.2mm

7/16"

3/8

19

0.656

 14.75mm

37/64"

1/2

14

0.825

18.25mm

23/32"

5/8

14

0.902

 

 

3/4

14

1.041

23.75mm

15/16"

7/8

14

1.189

 

 

1 inch

11

1.309

30mm

1-11/64"

 1-1/4"

11

 1.650

38.5mm

1-33/64"

 1-1/2"

11

1.882

44.5mm

1-3/4"

1-3/4"

11

2.116

 

 

2"

11

2.347

56mm

2-3/16"


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