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Straight flute hand tap, carbon steel, bright finish, 2.5 in overall length

Westward

Westward Straight Flute Hand Tap 1/4"-20 Taper 4 Flutes UNC

SKU CH-85KN-H3GXT

A straight-flute hand tap for cutting 1/4"-20 UNC threads in through-holes with a taper lead and four flutes

  • Product typeHole, Drill, Bore & Wire Gauges
  • Taper chamfer starts threads easily in through-holes
  • Four straight flutes clear chips efficiently during hand tapping
  • Carbon steel construction handles general-purpose threading tasks
  • Bright uncoated finish suits low-speed manual operations
  • 5 in overall length provides control for 1/4"-20 UNC threads

Thread-Cutting Tap for 1/4"-20 UNC Holes

This straight flute hand tap cuts internal threads in a 1/4"-20 UNC size. It is made from carbon steel with a bright uncoated finish. The tool suits maintenance, repair and light production work where a taper lead eases starting.

Taper Lead with Four Flutes

The taper chamfer provides a gradual thread start that reduces the force needed to begin cutting. Four straight flutes give good chip clearance in through holes and blind holes alike. The thread length is 1 in within an overall length of 2.5 in.

Right-Hand Threading for Standard Fasteners

The tap cuts right-hand threads that match common 1/4"-20 bolts and screws. It requires a suitable tap wrench or handle and cutting fluid for best results. Buyers needing a bottoming or plug chamfer, or a different thread limit, should select another model.

How it compares

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

Price $1.78
Cheaper than about 98% of the 2,474 comparable items (median $23.99).

Specifications

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

Questions about this item

What does the 1/4"-20 thread size mean when I am cutting threads in a real workpiece?

It produces a quarter-inch diameter Unified Coarse thread with 20 threads per inch, giving a standard coarse pitch for general fastening.

What does the UNC standard cap in practice for this tap?

UNC defines the coarse-thread series; the tap cuts a Class 1B fit, which is the loosest standard tolerance for easy assembly.

What does the 2.5 in overall length require from my tap wrench or holder?

The wrench must accommodate a tool 2.5 inches long with a 1-inch threaded section, leaving adequate shank for secure gripping.

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