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Westward 5TWK5 spiral point tap 1/2"-13 UNC TiN coated high speed steel 3 flutes plug style

Westward

Westward 5TWK5 Spiral Point Tap 1/2"-13 UNC TiN

SKU CH-QZYV-M26S7

Cuts 1/2"-13 UNC threads in through-holes with a TiN-coated, three-flute spiral point for chip clearance

  • Product typeHole, Drill, Bore & Wire Gauges
  • TiN coating extends tool life during high-speed threading
  • Spiral-point design pushes chips forward for cleaner through-holes
  • 1/2"-13 UNC thread cuts standard coarse fasteners
  • Three flutes balance chip clearance with cutting strength
  • H3 limit with 3B fit delivers precise thread engagement

Thread-Cutting Tool for 1/2"-13 UNC

This Westward spiral-point tap cuts 1/2"-13 UNC threads in through-holes using high-speed steel with a TiN coating. The plug-style lead and three flutes push chips ahead of the cut, making it suitable for general-purpose machine tapping in steel and non-ferrous metals.

Machine Setup and Chip Management

The tap requires a properly sized drill hole and a rigid tapping holder or collet on a milling machine, drill press, or lathe. Its spiral-point geometry frees the flutes from chip packing in through-holes, reducing torque spikes and the risk of tap breakage during production runs.

Upgrade from Standard Uncoated Taps

The TiN coating increases surface hardness and lubricity compared with uncoated high-speed steel, extending tool life in abrasive or gummy materials. The improvement justifies the cost when tapping volumes are high enough that frequent resharpening or replacement of plain taps slows throughput.

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

What thread limit does the H3 designation on this tap allow?

The H3 limit provides a Class 3B fit for 1/2"-13 UNC threads.

How much heat builds up in the high-speed steel body during extended tapping?

The TiN coating reduces friction and heat, helping the tool run cooler in sustained use.

Which tap wrench or holder fits the shank on this 3 3/8 in overall length tool?

A standard tap wrench sized for 1/2" taps will accept the shank on this spiral point tap.

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