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Cleveland C54235 three-piece #6-40 UNF straight flute hand tap set, high-speed steel, bright finish

Cleveland

Cleveland C54235 Straight Flute Hand Tap Set 3-piece #6-40 UNF HSS

SKU CH-ECXZ-YA2QT

Three-piece high-speed steel hand tap set cuts #6-40 UNF threads with taper, plug and bottoming taps

  • Cuts #6-40 UNF threads cleanly with straight-flute HSS taps
  • Three taps cover taper, plug and bottoming in one set
  • Right-hand threads with 3 flutes remove chips efficiently
  • High-speed steel stays sharp through repeated hand-tapping jobs
  • Bright uncoated finish resists corrosion without added coatings

Cleveland #6-40 UNF Hand Tap Set

This three-piece Cleveland tap set cuts #6-40 UNF threads in right-hand direction. The set includes taper, plug and bottoming straight-flute taps made from high-speed steel with a bright uncoated finish. Each tap measures two inches overall with an eleven-sixteenths inch thread length. Three flutes provide chip clearance during hand threading operations.

Suitable for internal threading in through

Mechanics and hobbyists cutting #6-40 UNF threads in metal will find the three tap styles cover the full threading process. The H2 thread limit produces a class 2B fit for standard applications. Builders needing left-hand threads, different thread standards or larger diameters must select alternative tooling. Coated taps for extended wear in abrasive materials are not included in this set.

Thread size #6-40 UNF determines compatibility

The #6-40 UNF designation specifies a number six diameter with forty threads per inch in the Unified National Fine series. A number thirty-three drill at seventy-five percent thread engagement prepares the correct hole size. Verify the workpiece requires this exact thread specification before purchase.

How it compares

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

Price $17.99
Cheaper than about 68% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

Should I pick the taper, plug or bottoming tap first for a #6-40 UNF hole?

Start with the taper tap to begin the thread, follow with the plug tap to deepen it, and finish with the bottoming tap to reach the bottom of a blind hole.

What does the 11/16 in thread length mean when I am tapping a part?

The cutting portion of each tap is 11/16 in long, so the full thread depth you can produce in one pass is limited to that length.

How does the H2 thread limit affect the fit of a #6-40 UNF thread?

The H2 limit sets the pitch-diameter tolerance for a class 2B fit, giving a standard medium fit for general-purpose UNF fastening.

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