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Three silver metal taps in a row

Greenfield Threading

Greenfield Threading 174514 HSS Taper Plug Bottoming Hand Tap Set pneumatic accessory

SKU CH-H34F-A20G4

Three-piece high-speed steel hand tap set with taper, plug and bottoming taps for 3/4‑16 UNF threads

  • 3/4"-16 UNF threads cut cleanly with high-speed steel
  • TiN coating extends tap life in repeated hand-threading jobs
  • Taper, plug and bottoming taps cover every threading stage
  • Four-flute design evacuates chips for smoother cuts
  • H3 limit and 3B class deliver precise fit for right-hand threads

Three-Piece Hand Tap Set

This Greenfield Threading set supplies taper, plug and bottoming taps for cutting UNF threads in a single operation. Each tap is made from high-speed steel with a TiN coating to resist wear during hand threading tasks. The set targets mechanics and fabricators who need to create or repair internal threads on site.

UNF Thread Standard and H3 Limit

The taps follow the Unified National Fine standard with a 3/4 inch diameter and 16 threads per inch. A 2 inch thread length and H3 pitch-diameter limit produce a class 3B fit for precision assemblies. Right-hand cutting direction and four flutes control chip flow in through holes. Builders requiring coarse threads or left-hand threads must select a different set.

High-Speed Steel Construction with TiN Coating

The HSS substrate withstands the heat generated by manual tapping in steel and alloy workpieces. TiN coating reduces friction and extends tool life compared with uncoated taps. A 4 1/4 inch overall length provides leverage for hand operation while fitting standard tap wrenches. Users needing machine-tapping speeds or coolant-through capability should choose dedicated machine taps.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $121.99
Pricier than about 87% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

Which version of the CHICAGO-LATROBE 174514 tap set should I choose?

The set includes three taps — taper, plug and bottoming — all sized 3/4 in.-16 UNF, HSS with TiN coating, H3 limit and 3B class of fit for right-hand threads.

What does the 3/4 in.-16 UNF thread size mean when I am cutting threads?

It produces a 3/4 inch diameter thread with 16 threads per inch in the Unified National Fine series, right-hand direction, suited for general-purpose fastening.

What standard does the H3 limit and 3B class of fit follow, and what does it cap?

They follow the Unified thread standard; H3 defines the pitch-diameter tolerance and 3B sets a close internal-thread fit for precision assemblies.

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