Product Details

NPT (American National Standard Taper) taps for general purpose use in a variety of materials conforming to ANSI standards are available. NPT threads (or National Standard Pipe Thread) are the technical standard for screw threads in the United States, most frequently used in threaded pipes and pipe fittings.

Of all of the types of threads (NPS, NPTF, etc.), NPT threads are used the most commonly in this country. (Outside the U.S., British Standard Pipe threads are used more regularly.)

Understand the key differences between NPT and NPTF taps.

NPT tap threads can be either tapered or straight, depending on the job at hand. The taper on NPT pipe taps means a seal is tightly formed when correctly torqued. This is due to the flanks of the threads compressing securely against each other (unlike straight thread fittings where the threads hold together without providing that tight seal).

Produces threads which conform to the American National Standard Taper Pipe Thread dimensions
Manufactured to Table 311 standards
Good for carbon and leaded steels as well as die-cast parts
High hook specially designed for stainless steel
Low angle specially designed for cast iron