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Westward 1/2"-14 NPT pipe tap, 4 flutes, bright uncoated finish, semi-bottoming design

Westward

Westward 5TWU0 Pipe Tap 1/2"-14 Semi-Bottoming 4 Flutes NPT hand tool

SKU CH-NKT3-C25P1

Cuts 1/2"-14 NPT threads with four-flute high-speed steel for clean, accurate pipe tapping

  • Product typeHole, Drill, Bore & Wire Gauges
  • Cuts 1/2"-14 NPT threads with a semi-bottoming design
  • Four flutes evacuate chips efficiently for clean threads
  • High-speed steel construction resists wear during repeated use
  • Bright uncoated finish suits general-purpose threading tasks
  • Right-hand cutting direction matches standard pipe fittings

Pipe tap for NPT threads

The Westward 5TWU0 is a 1/2"-14 NPT pipe tap designed for cutting internal tapered threads in pipe and conduit fittings. It suits plumbers, maintenance technicians and metalworkers who need reliable thread engagement for fluid or gas systems.

Semi-bottoming design with four flutes

The semi-bottoming chamfer allows threading closer to the bottom of blind holes than a standard taper tap. Four flutes provide balanced chip evacuation and cutting stability in materials such as steel, stainless steel and cast iron.

NPT standard and drill-size constraint

The tap follows the NPT 3B class of fit with a 75 percent thread depth, requiring a 0.7031 in drill size for correct hole preparation. Thread length is 1 3/8 in within an overall length of 3 1/8 in, limiting the maximum threadable depth in a single pass.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $22.99
Typical for this category: the median of 2,474 items is $23.99.

Specifications

Product
Brand nameWestward
Product typeHole, Drill, Bore & Wire Gauges

Questions about this item

Will the 1/2"-14 NPT tap fit the same 0.7031 inch drill size I already use for other NPT threads?

Yes, the 75 percent thread drill size for this 1/2"-14 NPT tap is 0.7031 in, so it matches the drill you already use.

How can I confirm the tap is cutting a correct NPT thread after I start it?

Check that the thread gauge shows a Class 3B fit and that the thread length reaches 1 3/8 in on the workpiece.

Does the package include a handle or die stock for the 4-flute tap?

The box contains only the high-speed steel pipe tap; a tap wrench or handle must be purchased separately.

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