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Westward spiral point tap, 1/2"-20 UNF, 3 flutes, bright finish

Westward

Westward 5TWE0 Spiral Point Tap 1/2"-20 UNF Plug 3 Flutes Bright

SKU CH-FPR3-31C5Y

A spiral point tap for 1/2"-20 UNF threads with three flutes and a bright high-speed steel finish

  • Product typeHole, Drill, Bore & Wire Gauges
  • Cuts 1/2"-20 UNF threads cleanly with spiral-point design
  • Three flutes eject chips forward for smooth plug tapping
  • High-speed steel construction resists wear in production use
  • Bright uncoated finish suits general-purpose threading tasks
  • Right-hand H3 limit meets Class 3B fit requirements

Professional Thread Cutting

The Westward 5TWE0 spiral point tap produces UNF threads at 1/2"-20 pitch for mechanics and machinists who cut internal threads in through-holes. High-speed steel construction handles repeated use in steel and non-ferrous metals. The bright finish suits general-purpose work where coating is not required. Right-hand cutting matches standard fastener orientation.

Consistent Chip Evacuation

Spiral point geometry pushes chips ahead of the tap during sustained cutting, reducing flute clogging in deep or continuous operations. Three flutes balance chip clearance with core strength so the tool resists breakage under steady feed pressure. H3 thread limit and 3B class of fit maintain tolerance across multiple holes without frequent gauge checks.

UNF 1/2"-20 Specification

This tap only cuts unified fine threads at 1/2 inch diameter with 20 threads per inch; it will not produce coarse, metric or left-hand threads. Buyers who need a different pitch, diameter or thread standard must select another tool. Overall length is 3 3/8 inches with a thread length of 1 21/32 inches for standard reach.

How it compares

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

Price $12.99
Cheaper than about 73% of the 2,474 comparable items (median $23.99).

Specifications

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

Questions about this item

Does the 1/2"-20 UNF tap generate noticeable heat during extended use?

The high-speed steel construction handles typical threading heat; using cutting fluid keeps temperatures low during long sessions.

What tap wrench size fits the 3-flute shank for this 1/2"-20 UNF tap?

A standard 1/2-inch tap wrench matches the shank, providing secure grip for manual or machine tapping.

Will the H3 thread limit cut clean threads in an older 3B-class UNF hole?

Yes, the H3 limit is designed for 3B-class fit, producing precise threads in existing UNF holes.

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