Description
National Pipe Thread [NPT] - Starter & Bottom Taps
This listing you can choose your lead for Carbon Steel NPT Taps
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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