Screwing Taps:


High Speed Steel Taper Pipe Taps - BSPT and NPT


High Speed Steel
Taper Pipe Taps - BSPT and NPT
Ground Threads


 

BSPT - British Standard Pipe Taper (RC- Series)

Nominal Diameter Pitch Thread Length Overall Length
1/8 28 15 59
1/4 19 19 67
3/8 19 21 75
1/2 14 26 87
5/8 14 26 92
3/4 14 28 96
7/8 14 29 102
1 11 33 109
1.1/8 11 34 115
1.1/4 11 36 119
1.1/2 11 37 125
1.3/4 11 39 132
2 11 41 140
2.1/4 11 42 142
2.1/2 11 45 153
3 11 48 164
4 11 50 185

Dimensions in mm / Inches

Specification conform to BS : 949 - 1982.

These Taps are usually Supplied in a set of three - Taper, Second and Bottoming.


NPT - American National Standard Taper Pipe Thread

Nominal Diameter Pitch Thread Length Overall Length
1/16 27 2.1/8 0.3125
1/8 27 2.1/8 0.4375
1/4 18 2.7/16 0.5625
3/8 18 2.9/16 0.7000
1/2 14 3.1/8 0.7875
3/4 14 3.1/4 0.9063
1 11.1/2 4 1.1250
3/4 14 3.1/4 1.1250
1.1/4 11.1/2 4 1.3125
1.1/2 11.1/2 4.1/4 1.5000
2 11.1/2 4.1/2 1.8750

 

Dimensions in mm

Specification conform to BS : 949 - 1971.

These Taps have RH cutting NPT and NPTF - Dryseal American National Standard.
Taper Pipe Thread.

 


 
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