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Taps & Dies
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Thread standards
- M - metric regular thread
- MF - metric fine thread
- G (BSP) - pipe thread
- UNC - American coarse thread
- UNF - American fine thread
- UNEF - amer. Extra fine thread
- UN - amer. with special pitch
- UNS - amer. with special pitch
- BSW - british coarse thread
- BSF - British fine thread
- Tr - trapezoidal thread
- Rd - knuckle thread
- NPT - amer. taper pipe thread
- NPTF - amer. taper pipe thread
- NPS - amer. cyl. pipe thread
- Rc (BSPT) - taper pipe thread
- Rp (BSPP) - cyl. pipe thread
- Vg - valve thread
- BA - brit. assn. Thread
- BSB - BSC - brit. std. thread
- W - taper gas cylinder valves
- Electrical and cable thread
- Bicycle and pedal thread
- Photo and C-Mount Thread
- Mini and nano threads (< 2mm)
- PG - steel conduit thread
- S - buttress thread
- RMS - microscope thread
- MJ, UNJC, UNJF - Aviation
- STI thread (thread inserts)
- Special thread
- Operating tools
- Lubricant
- Thread restoration tools
- Countersink
- Step drills
- Thread gauges
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Thread standards
- BaerCoil/BaerFix
- Drill chucks
- Twist drill bits
Screw taps for NPS pipe thread ANSI B 1.20.1
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NPS – American National Pipe Straight Thread
The NPS thread is part of the U.S. pipe thread standards commonly used in a wide range of installations. NPS stands for National Pipe Straight. Unlike tapered threads, NPS is a straight (cylindrical) thread. Just like Whitworth pipe threads, American pipe threads such as NPS are specified in inches.
The NPS thread essentially corresponds to the NPT pipe thread, with one crucial difference: it is straight rather than tapered. This fact is key to sealing performance and is the defining characteristic of this pipe thread.
Everything You Need to Know About NPS Pipe Threads
The NPS thread is an inch-based thread with a 60° flank angle. Pitch is specified in threads per inch. Thread designations consist of the NPS abbreviation, the nominal size, and the threads per inch, for example NPS 1/8″ × 27. Note that the nominal size does not match the actual major diameter—a peculiarity NPS shares with other inch-based pipe threads.
NPS is not a sealing thread, which means additional sealant is always required for leak-tight connections—especially under high pressure. An important distinction is between NPT and NPS threads. Although their profiles are identical and they can mate, they do not seal together. Always verify whether the pipe threads used are straight or tapered.
NPS Threads – Our Product Range
If you need to cut American straight pipe threads, the BAER online shop has the right tools. At BAER, you’ll find high-quality taps and dies that make the job easy.
NPS Taper Taps
Taper taps are ideal when you need flexibility. You can use them with a tap wrench by hand or mount them in a machine. With these taps, you cut NPS threads in a single operation.
In our shop, NPS taps come in two styles. Tools with straight flutes are suitable for through and blind holes. The version with a 35° right-hand spiral evacuates chips against the cutting direction and is especially suited for blind holes.
All NPS taps are made of premium high-speed steel and are available in many sizes and diameters. Cut perfect threads for robust pipe connections that won’t let you down.
NPS Round Dies
Of course, BAER tools also let you cut NPS external threads with ease. We offer a range of high-quality round dies. Use a die stock for hand work or clamp the die adapter in a machine. Premium HSS construction and precision manufacturing deliver long life and perfect results.
Discover Tools and Accessories for NPS Threads in the BAER Online Shop!
At BAER, we aim to support you fully. That’s why we offer not only top-quality tools but also comprehensive customer service. A simple ordering process, fast shipping, and helpful staff are the pillars of our philosophy. Give us a try and visit our online shop. For any questions, contact us by phone or via our contact form.
Do you have any questions? We have the answers!
You'll quickly find the right answers in our FAQ - take a look!