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Three silver metal taps in a row

Greenfield Threading

Greenfield Threading 174546 3pc HSS Tap Set 9/16-12 UNC

SKU CH-M93Y-9HSWY

Three-piece high-speed steel tap set cuts 9/16-12 UNC threads with taper, plug and bottoming tools in a TiN-coated H3/3B configuration

  • Right-hand cutting for standard threads
  • High-speed steel with TiN coating for wear resistance
  • Three-piece set covers taper, plug and bottoming taps
  • 4-flute design improves chip clearance
  • UNC 9/16-12 thread size with H3 limit for 3B fit

Greenfield Threading 174546 HSS Tap Set

This three-piece hand tap set contains taper, plug and bottoming taps for cutting right-hand UNC threads. Each tap is made from high-speed steel with a titanium nitride coating and has four flutes. The set is manufactured by CHICAGO-LATROBE and supplied new.

Suited for thread repair and through-hole work

Mechanics and machinists cutting 9/16 inch minus 12 UNC threads to a 3B class of fit will find the correct tap for each stage in one pack. The H3 thread limit matches standard tolerance requirements. Buyers needing left-hand threads or a different thread standard should look elsewhere.

9/16-12 UNC thread size determines fit

The taps are ground to a 9/16 inch diameter with 12 threads per inch in a Unified National Coarse series. This single specification decides whether the set matches the hole or bolt being worked on..verify the thread pitch and diameter before purchasing.

How it compares

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

Price $85.99
Pricier than about 80% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCHICAGO-LATROBE

Questions about this item

What thread standard and pitch does the 9/16-12 UNC tap set follow?

The set follows the UNC standard with a 12 threads-per-inch pitch for right-hand threads.

What are the overall and thread lengths that determine clearance in a hole?

Overall length is 3 19/32 in and thread length is 1 21/32 in.

How do you use the taper, plug and bottoming taps in the correct order?

Start with the taper tap, follow with the plug tap, then finish with the bottoming tap to cut full threads to depth.

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