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National Pipe Thread [NPT] - Starter & Bottom Taps

 This listing you can choose your lead for Carbon Steel NPT Taps


 PRICES INCLUDE FREE TRACKED SHIPPING AUSTRALIA WIDE

STARTER OR BOTTOM/PLUG TAPS 

Aprica Brand, manufactured to ISO standards. 

These Taps are best used on brass aluminium mild steels, for harder steel like 10-40 or stainless steels we recommend high speed steel taps over the carbon steel type.

 

Nominal Pipe Size (NPT)

Threads per Inch (TPI)

Major OD of Male Thread (inches)

Major OD (mm)

1/8" NPT

27

0.405"

10.29 mm

1/4" NPT

18

0.540"

13.72 mm

3/8" NPT

18

0.675"

17.15 mm

1/2" NPT

14

0.840"

21.34 mm

3/4" NPT

14

1.050"

26.67 mm

1" NPT

11.5

1.315"

33.40 mm

1-1/4" NPT

11.5

1.660"

42.16 mm

1-1/2" NPT

11.5

1.900"

48.26 mm

2" NPT

11.5

2.375"

60.33 mm

 

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