2021 popular Drill lowest America - lowest DWTPT1INCH 1"-11-1/2 NPT Pipe Tap, Carbon Steel, DWTPT Series online sale

2021 popular Drill lowest America - lowest DWTPT1INCH 1"-11-1/2 NPT Pipe Tap, Carbon Steel, DWTPT Series online sale

2021 popular Drill lowest America - lowest DWTPT1INCH 1"-11-1/2 NPT Pipe Tap, Carbon Steel, DWTPT Series online sale
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NPT Taps

Also called 'pipe taps', National Pipe Taper (NPT) taps are appropriate for threading a wide variety of materials both ferrous and non-ferrous.

Carbon Steel NPT Pipe Taps High-Speed Steel NPT Pipe Taps
Material Carbon Steel High Speed Steel
Cleaning Threads in All Materials
New Threads in Soft Materials Ex: Plastic
New Threads in Harder Materials Ex: Metal Not Recommended

About National Pipe Taper (NPT) Taps

  • The nominal size of a Pipe Tap is that of the pipe fitting to be tapped, not the actual size of the tap.
  • The thread tapers 3/4 of an inch per foot. All Pipe Taps furnished with a 2-1/2 to 3-1/2 thread chamfer.
  • NPT threads require the use of a “sealer” like teflon tape or pipe compound.

Features & details

Features

  • Carbon steel pipe taps are designed to clean and or re-thread damaged or jam pipe threads
  • Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
  • Round shank with square end
  • Straight flute tools allow chips to collect in the flutes as they cut and are well suited for most applications in shallow cuts
  • Right-Hand cut tools have a cutting action that engages when they are run in a clockwise direction

Product information 1"-11-1/2 NPT

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4.7 out of 54.7 out of 5
1,653 global ratings

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Top reviews from the United States

Vicster
5.0 out of 5 starsVerified Purchase
Nice for the price
Reviewed in the United States on July 27, 2019
Size: 1-1/2"-11-1/2 NPT
It''s a tap-does what it says, says what it does. Definitely carbon steel, lube it while using it, keep it in oil coat after use like any steel tap/die. Saved me having to rip out a section of drain at the house just to replace a T fitting. Normally I would... See more
It''s a tap-does what it says, says what it does. Definitely carbon steel, lube it while using it, keep it in oil coat after use like any steel tap/die.

Saved me having to rip out a section of drain at the house just to replace a T fitting. Normally I would replace the fitting, it would be much cheaper, but this fitting was part of my bathroom sink drain and vent system. The horizontal nipple from the P trap to the drain/vent T branch had corroded and fused threads. I would have had to rip out all that pipe from the floor to the roof to replace the T fitting. Instead, I bought this tap and big bottle of Tap Magic. Let me tell you, I''ve never been happier with a tap in my life. Labor and money saver!
7 people found this helpful
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Whirledtraveller
5.0 out of 5 starsVerified Purchase
Good for cleaning up threads
Reviewed in the United States on April 8, 2019
Size: 3/4"-14 NPT
A proper tap from a name brand costs 5x as much, so you know there''s some corners cut and probably not the correct tool for heavy duty use like making new threads in hard steel. For me, I had an air compressor tank outlet where the brass reducing fitting became corroded... See more
A proper tap from a name brand costs 5x as much, so you know there''s some corners cut and probably not the correct tool for heavy duty use like making new threads in hard steel. For me, I had an air compressor tank outlet where the brass reducing fitting became corroded into place and couldn''t be removed using normal means. I drilled it out and used this tap to clean up the mess. It made short work of the brass and cleanup up the steel threads no problem. Even if I only use it that one time it''s paid for itself.
2 people found this helpful
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A. Hazi
2.0 out of 5 starsVerified Purchase
Did not last...
Reviewed in the United States on July 17, 2018
Size: 2"-11-1/2 NPT
The tap seems hefty but it did not last very long. I barely managed to clean/slightly expand one (1) existing 2" thread in soft cast iron and few of the teeth broke (see pictures). It kind of did the job but I decided to return it and next time buy a better one. It... See more
The tap seems hefty but it did not last very long. I barely managed to clean/slightly expand one (1) existing 2" thread in soft cast iron and few of the teeth broke (see pictures). It kind of did the job but I decided to return it and next time buy a better one. It might work on some materials (PVC, copper etc) but did not work for me.
8 people found this helpful
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Banned for honest reviews
3.0 out of 5 starsVerified Purchase
Not the best tap in the world - Works, but not well
Reviewed in the United States on September 18, 2019
Size: 1/2"-14 NPT
Took an enormous amount of torque and lube to thread PLASTIC. I think they''re just a bad design (grind angles, etc) I''ve tapped stainless with good taps that was easier than this in cast urethane. Anyway, I only had to do 20 holes, so I wasn''t about to blow a paycheck on a... See more
Took an enormous amount of torque and lube to thread PLASTIC. I think they''re just a bad design (grind angles, etc) I''ve tapped stainless with good taps that was easier than this in cast urethane. Anyway, I only had to do 20 holes, so I wasn''t about to blow a paycheck on a good tap, so I guess they''re OK, but I would pass over these for anything even remotely like production work.
2 people found this helpful
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Michael Kelsey
4.0 out of 5 starsVerified Purchase
Saved me a lot of work!!
Reviewed in the United States on February 22, 2017
Size: 1-1/2"-11-1/2 NPT
Bought the 1.5 inch Tap Had a leak in my kitchen drain line. When i removed the only galvanized pipe the threads broke off inside the cast iron fitting. I was able to remove half of the threads via every method I could think, but I just couldnt access the... See more
Bought the 1.5 inch Tap

Had a leak in my kitchen drain line. When i removed the only galvanized pipe the threads broke off inside the cast iron fitting. I was able to remove half of the threads via every method I could think, but I just couldnt access the second half of the threads. Bought this as a last resort, but I should have bought it first.

My only complaint is that the is square instead of HEX so I couldnt use Sockets. I was able to use a 1 1/8 inch opened ended wrench to turn the piece. I eventually figured out that an 1 3/8 inch socket would kind of fit on the square head and was able to use my socket wrench and pry bar to finish the job.
5 people found this helpful
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Truthsayer
5.0 out of 5 starsVerified Purchase
Competitive price, does what it should
Reviewed in the United States on November 28, 2020
Size: 1-1/2"-11-1/2 NPT
I bought this to chase threads on a 60 year old home''s sink drains during a remodel. The pipes were in surprisingly good condition, but the old cast iron pipe threads needed to be cleaned up. The tap was tapered well so starting was easy, the hardness seemed good, nothing... See more
I bought this to chase threads on a 60 year old home''s sink drains during a remodel. The pipes were in surprisingly good condition, but the old cast iron pipe threads needed to be cleaned up. The tap was tapered well so starting was easy, the hardness seemed good, nothing chipped, and it was the best price I could find. This is not a tool I use every day, week, month or year, but it sure beats paying a plumber if you have the basic skills & knowledge to use it properly.
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Noway
5.0 out of 5 starsVerified Purchase
Well made and very sharp
Reviewed in the United States on September 6, 2020
Size: 3/4"-14 NPT
I used it to re-thread a Polaris pool cleaner booster pump which as newly purchase was sadly cross threaded. The NPT pipe tab cut through the booster pump like a hot knife through butter. Just what I need . . . a well made tap indeed. Came in a nice plastic storage case.... See more
I used it to re-thread a Polaris pool cleaner booster pump which as newly purchase was sadly cross threaded. The NPT pipe tab cut through the booster pump like a hot knife through butter. Just what I need . . . a well made tap indeed. Came in a nice plastic storage case. Cheers!
One person found this helpful
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MrWizard
4.0 out of 5 starsVerified Purchase
One Time Use Was Fine
Reviewed in the United States on July 20, 2018
Size: 3/4"-14 NPT
This tap was needed for a one-time-only use - tapping a 3/4 NPT thread into the exhaust block of an aluminum Honda pressure washer engine for a special project. It did a fine job and will likely not be used again. The threads were sharp & cut with no trouble using a socket... See more
This tap was needed for a one-time-only use - tapping a 3/4 NPT thread into the exhaust block of an aluminum Honda pressure washer engine for a special project. It did a fine job and will likely not be used again. The threads were sharp & cut with no trouble using a socket wrench, ratchet handle & cutting oil. (Local hardware & plumbing stores did not stock a tap this big.)

The tap came in a sturdy 2 part slide-together plastic sleeve which will serve as its protective sheath for storage after rust proofing.
3 people found this helpful
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Top reviews from other countries

Lorrick
5.0 out of 5 starsVerified Purchase
A Good Product
Reviewed in the United Kingdom on February 8, 2019
A good Product and great value for money, a well made item
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Jimbo
5.0 out of 5 starsVerified Purchase
Attention RVers
Reviewed in Canada on September 22, 2020
Used this 3/4" NPT Tap to clean the threads for the Anode Rod on my Suburban Water Heater in my Motorhome. Used a little vegetable oil on the Tap for lubricant since regular petroleum based oils could possibly contaminate the water lines in the motorhome. The Anode Rod fits...See more
Used this 3/4" NPT Tap to clean the threads for the Anode Rod on my Suburban Water Heater in my Motorhome. Used a little vegetable oil on the Tap for lubricant since regular petroleum based oils could possibly contaminate the water lines in the motorhome. The Anode Rod fits much better now and doesn''t feel like I''m cross threading while installing. Good tool to have for future maintenance.
2 people found this helpful
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Kevin
5.0 out of 5 starsVerified Purchase
Good value for a hobbyist
Reviewed in Canada on June 1, 2018
I used it to tap for a plug on the LS heater hose line on the water pump. Tap held up fine. Just take your time while tapping aluminum as it will gall. Should be just fine in steel. It''s a good piece for the price no doubt.
2 people found this helpful
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Andrew harrigan
5.0 out of 5 starsVerified Purchase
Pool heater problem.
Reviewed in Canada on August 15, 2020
My drain plugs wouldn''t screw back into my pool heater,I noticed the threads in the heater were rusted and damaged,l tried everything but still could not get plugs to enter the heater screw drain holes.I determined I needed a 1/4 -18npt tap and went straight To Amazon and...See more
My drain plugs wouldn''t screw back into my pool heater,I noticed the threads in the heater were rusted and damaged,l tried everything but still could not get plugs to enter the heater screw drain holes.I determined I needed a 1/4 -18npt tap and went straight To Amazon and found a carbon steel 1/4-18 not high quality tap which was delivered next morning.I gently retapped the drain holes and entered plugs with no problem.I opened up the pool and thanks to Amazon the family were back swimming.Amazon has never let me down love you guys.
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evelyn Miazga
5.0 out of 5 starsVerified Purchase
Did the job in my RV hot water tank
Reviewed in Canada on June 12, 2020
Worked as expected Suggest you have a socket wrench. You can start it by hand to be sure you are going straight but then the socket is better for continuing to turn the NPT.
One person found this helpful
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2021 popular Drill lowest America - lowest DWTPT1INCH 1"-11-1/2 NPT Pipe Tap, Carbon Steel, DWTPT Series online sale

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