Westward
Westward 5TWT7 Pipe Tap 1/8"-27 NPT 4 Flutes
Threaded pipe tap cuts 1/8"-27 NPT threads with four flutes in high-speed steel
- TypeHole, Drill, Bore & Wire Gauges
- Cuts clean NPT threads with four-flute design
- High-speed steel body resists wear on pipe work
- Right-hand taper starts easily in drilled holes
- 75 percent thread engagement for leak-tight joints
- Bright finish prevents coating buildup in threads
Westward 1/8"-27 NPT Pipe Tap
The Westward 5TWT7 is a taper-style pipe tap designed for cutting internal NPT threads in pipe and conduit fittings. It suits plumbers, maintenance technicians and metalworkers who need to create pressure-tight joints in ferrous or non-ferrous materials. The right-hand cutting direction matches standard threading practice.
Capacity and headroom for thread cutting
The tap produces a 1/8 inch nominal thread with 27 threads per inch and a thread length of three-quarters of an inch. Its 75 percent thread drill size Q provides appropriate clearance for the cutting action. Four flutes distribute chip load evenly, giving sufficient headroom for typical pipe-fitting work while limiting use to the specified thread size and class of fit.
Practical limits of NPT taper standard
The NPT taper standard requires the thread to seal through thread interference, so the 3B class of fit defines the allowable tolerance envelope. High-speed steel construction with a bright uncoated finish offers standard wear resistance for manual or machine tapping. The tool cannot cut other thread forms, sizes or materials beyond the hardness range suited to uncoated HSS.
Highlights
- Cuts clean NPT threads with four-flute design
- High-speed steel body resists wear on pipe work
- Right-hand taper starts easily in drilled holes
- 75 percent thread engagement for leak-tight joints
- Bright finish prevents coating buildup in threads
Specifications
| Brand | Westward |
|---|---|
| Type | Hole, Drill, Bore & Wire Gauges |
Questions about this item
Will the 1/8"-27 NPT tap thread into my existing 1/8" pipe fittings?
Yes, the tap cuts standard NPT threads sized 1/8"-27 to match compatible pipe fittings.
How do I verify the 4-flute tap is cutting clean threads at the correct 75 percent depth?
Check that threads form evenly across all four flutes and gauge the thread depth against the 3/4 inch thread length specification.
Does the package include the Q-size drill bit for the 75 percent thread drill size?
The tap is sold individually; the Q drill bit for the 75 percent thread drill size must be purchased separately.
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