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Bright uncoated steel spiral point tap with three flutes and plug chamfer

Westward

Westward 5TWD7 Spiral Point Tap 7/16"-14 UNC 3 Flutes Bright

SKU CH-DQDZ-ZPX51

A spiral-point tap cuts 7/16"-14 UNC threads in through-holes with three flutes and a bright high-speed steel finish

  • Product typeHole, Drill, Bore & Wire Gauges
  • Spiral-point design pushes chips ahead for smoother threading
  • High-speed steel construction resists wear during repeated use
  • Bright uncoated finish suits general-purpose tapping tasks
  • Three flutes balance chip clearance with cutting strength
  • 7/16"-14 UNC thread size fits standard coarse-pitch holes

Westward 5TWD7 Spiral Point Tap

This Westward spiral point tap cuts 7/16"-14 UNC threads in through holes. The H3 limit and 3B class of fit suit general-purpose threading work. Three flutes provide chip clearance while the plug chamfer starts threads easily. Bright high-speed steel resists wear in steel and cast iron.

Sustained threading performance

The spiral point design pushes chips ahead of the tap, reducing flute clogging during continuous cutting. High-speed steel maintains hardness at elevated temperatures generated by repeated passes. Uncoated bright finish allows lubricant to adhere directly to the cutting edges. Right-hand rotation matches standard machine and hand-tapping operations.

Upgrade from worn or undersized taps

Replaces dull taps that produce oversize or rough threads requiring rework. The H3 limit corrects fit issues from taps worn below tolerance. Three-flute geometry improves chip flow compared to two-flute designs in deeper holes. Bright finish suits shops that prefer uncoated tooling for inspection and resharpening.

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

How much heat does the 7/16"-14 tap generate during all-day threading?

The high-speed steel body dissipates heat from the cutting zone, and the bright finish reduces friction so the tool stays workable through extended use.

What holder or machine must I already own to run this 3-flute spiral-point tap?

A tap wrench, T-handle or CNC spindle with a 7/16" square drive accepts the shank; the right-hand threads cut in a clockwise direction.

Will this H3-limit tap fit the older 3B-class nuts I keep in stock?

Yes — the H3 limit is manufactured to the 3B class of fit, so it produces threads that mate with existing 3B nuts and bolts.

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