British Size Taps

BSW | BSF | BSB | BA

pipe sizes: BSPT | BSP


British Standard Whitworth Taps


BSW

Size
Number
Or Inch

Pitch
TPI
1/8
5/32
3/16

1/4
5/16
3/8

7/16
1/2
9/16

5/8
11/16
3/4

7/8
1
1-1/8

1-1/4
1-3/8
1-1/2

1-3/4
2
2-1/4

2-1/2		 40
32
24

20
18
16

14
12
12

11
11
10

9
8
7

7
6
6

5
4.5
4

4



when ordering taps please specify the diameter and pitch and style of tap

example

TAP1/4BSW.1 for 1/4 BSW taper tap
TAP1/4BSW.2 for 1/4 BSW plug tap
TAP1/4BSW.3 for 1/4 BSW bottoming tap

 




 


British Standard Fine Taps


BSF

Size
Number
Or Inch

Pitch
TPI
3/16
1/4
5/16

3/8
7/16
1/2

9/16
5/8
3/4

7/8
1		 32
26
22

20
18
16

16
14
12

11
10


when ordering taps please specify the diameter and pitch and style of tap

example

TAP1/4BSF.1 for 1/4 BSF taper tap
TAP1/4BSF.2 for 1/4 BSF plug tap
TAP1/4BSF.3 for 1/4 BSF bottoming tap

 




British Association Taps

BA

Size
Number
No 14
No 13
No 12

No 11
No 10
No 9

No 8
No 7
No 6

No 5
No 4
No 3

No 2
No 1
No 0


when ordering taps please specify the diameter and pitch and style of tap

example

TAP4BA.1 for 1/4 BA taper tap
TAP4BA.2 for 1/4 BA plug tap
TAP4BA.3 for 1/4 BA bottoming tap

 







British Standard Brass Taps


BSB

Size
Number
Or Inch

Pitch
TPI
1/4
5/16
3/8

7/16
1/2		 26
26
26

26
26




when ordering taps please specify the diameter and pitch and style of tap

example

TAP1/4BSB.1 for 1/4 BSB taper tap
TAP1/4BSB.2 for 1/4 BSB plug tap
TAP1/4BSB.3 for 1/4 BSB bottoming tap

 






BSPT - 1:16 Taper Pipe Taps

BSPT

Size
Number
Or Inch

Pitch
TPI
1/8
1/4
3/8

1/2
3/4
1

1-1/4
1-1/2
2

2-1/2		 28
19
19

14
14
11

11
11
11

11

when ordering taps please specify the diameter and pitch and style of tap

example

TAP1/4BSPT for 1/4 BSPT tap







BSP Pipe Taps

BSP

Size
Number
Or Inch

Pitch
TPI
1/8
1/4
3/8

1/2
5/8
3/4

7/8
1
1-1/8

1-1/4
1-1/2
1-3/4

2
2-1/4
2-1/2

3		 28
19
19

14
14
14

14
11
11

11
11
11

11
11
11

11

 

when ordering taps please specify the diameter and pitch and style of tap

example

TAP1/4BSP for 1/4 BSP tap

 

link to tap and die index page

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