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Three bright uncoated high speed steel hand taps 7/8-14 UNF H4

Westward

Westward 5TVZ0 Hand Tap Set 7/8-14 H4 PK3

SKU CH-Z7HE-ZE3WZ

Three high-speed steel taps cut 7/8-14 UNF threads with H4 limit and four flutes

  • Product typeFractional
  • High-speed steel construction resists wear during threading
  • UNF 7/8-14 thread standard ensures precise fit
  • H4 limit class delivers accurate internal threads
  • Four-flute design clears chips for smoother cuts
  • Three-piece set provides taper, plug and bottoming taps

Westward 7/8-14 UNF Tap Set

This Westward hand tap set cuts 7/8-14 UNF threads in a right-hand direction. It contains three high-speed steel taps with a bright, uncoated finish. Each tap has four flutes and an H4 thread limit for standard fit. The set suits maintenance, repair and small-batch threading work.

Installation and Common Issues

Start the tap square to the hole using a suitable tap wrench and apply cutting fluid for each pass. Advance the tap one turn, then back off half a turn to break chips and prevent binding. The most frequent problems are misalignment that produces oversized or bell-mouthed threads and tap breakage caused by insufficient lubrication or forcing the tool.

Pre-Order Checks

Verify that the workpiece material is compatible with high-speed steel taps and that the drilled hole matches the 7/8-14 UNF tap drill size. Confirm the required thread limit is H4 and that a right-hand thread is correct for the application. Ensure you have a tap wrench that fits the 4 11/16 in overall length and 2 7/32 in thread length.

How it compares

Measured against everything we stock in General Hardware & Accessories, at today’s prices. Recalculated every night.

Price $98.99
Pricier than about 85% of the 2,607 comparable items (median $18.99).

Specifications

Product
Brand nameWestward
Product typeFractional

Questions about this item

How can I confirm the 7/8-14 UNF threads are cutting correctly after setup?

Check that each tap produces a clean, right-hand UNF thread with a 2 7/32 in thread length and four flutes engaging smoothly in the workpiece.

What comes in the package and what must I supply separately?

The set includes three H4-limit high-speed steel taps; you will need a suitable tap wrench, cutting fluid and a correctly sized drill bit for the 7/8-14 UNF thread.

Which thread limit should I choose for a standard 7/8-14 UNF fit?

The H4 limit supplied in this set is the standard choice for a normal class-of-fit in 7/8-14 UNF applications.

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