ANSI NPT

Hand Taps for American Taper Pipe Threads

Specification

■ The NPT tap is a hand tap for the American tapered pipe threads and is used for products whose main purpose is the tightness of threaded Oxide parts in the connection of parts for pipes.

Recommended Tapping Speed depending on Materials

Medium carbon steels High carbon steels Alloy steels

中炭素鋼5高炭素鋼5合金鋼5
(m/min)(m/min)( m/ min)

TYPE:1 TYPE:2

Projection Projection

Segment:1G

SizeClassCodeChamferL (inch)ℓ (inch)Projection (inch)Ds (inch)K (inch)ℓk (inch)No. of flutesTYPE
ForAmericanPipe Threads
1/16-27 NPTANSI GY831003P2.1250.6870.3120.3120.2340.37541
1/16-27 NPTANSI GY83100BR3P2.1250.6870.3120.3120.2340.37541
1/8-27 NPTANSI GY831013P2.1250.750.3120.4370.3280.37541
1/8-27 NPTANSI GY83101BR3P2.1250.750.3120.4370.3280.37541
1/8-27 NPTANSI GY831023P2.1250.750.3120.3120.2340.37542
1/8-27 NPTANSI GY83102BR3P2.1250.750.3120.3120.2340.37542
1/4-18 NPTANSI GY831033P2.4371.0620.4590.5620.4210.43741
1/4-18 NPTANSI GY83103BR3P2.4371.0620.4590.5620.4210.43741
3/8-18 NPTANSI GY831043P2.5621.0620.4540.70.5310.541
3/8-18 NPTANSI GY83104BR3P2.5621.0620.4540.70.5310.541
1/2-14 NPTANSI GY831053P3.1251.3750.5790.6870.5150.62542
1/2-14 NPTANSI GY83105BR3P3.1251.3750.5790.6870.5150.62542
3/4-14 NPTANSI GY831063P3.251.3750.5650.9060.6790.68742
3/4-14 NPTANSI GY83106BR3P3.251.3750.5650.9060.6790.68742
1 -11 1/2 NPTANSI GY831073P3.751.750.6781.1250.8430.81252
1 -11 1/2 NPTANSI GY83107BR3P3.751.750.6781.1250.8430.81252
1 1/4-11 1/2 NPTANSI GY831083P41.750.6861.3120.9840.93752
1 1/4-11 1/2 NPTANSI GY83108BR3P41.750.6861.3120.9840.93752
1 1/2-111/2 NPTANSI GY831093P4.251.750.6991.51.125162
1 1/2-111/2 NPTANSI GY83109BR3P4.251.750.6991.51.125162
2 -11 1/2 NPTANSI GY831103P4.51.750.6671.8751.4061.12562
2 -11 1/2 NPTANSI GY83110BR3P4.51.750.6671.8751.4061.12562