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Cleveland straight-flute hand tap 7/16-14 bright steel 3.16 in long

Cleveland

Cleveland C54654 Straight Flute Hand Tap 7/16"-14 pneumatic accessory

SKU CH-6CS9-DE8HF

Straight flute hand tap cuts 7/16"-14 UNC threads in 1.44 in length with H3 limit for 2B fit

  • Product typeTaps
  • Straight-flute design cuts clean UNC threads
  • High-speed steel resists wear during repeated tapping
  • Bottoming chamfer reaches full depth in blind holes
  • 7/16"-14 size matches standard coarse-thread applications
  • Bright uncoated finish suits general-purpose hand tapping

Cleveland C54654 Straight Flute Hand Tap

The Cleveland C54654 is a straight flute hand tap designed for creating internal threads in through or blind holes. It features a 7/16"-14 UNC thread size with a bottoming chamfer and an H3 thread limit for a 2B class of fit. Manufactured from high speed steel with a bright uncoated finish, the tap has an overall length of 3.16 in and a thread length of 1.44 in.

Ideal Applications and Limitations

This tap suits machinists and maintenance personnel cutting new threads or cleaning existing ones in ferrous and non-ferrous materials where a right-hand UNC thread is required. It is not intended for high-volume production tapping where spiral point or spiral flute geometries evacuate chips more efficiently. Buyers needing a different thread standard, pitch, or a coated tool for extended life in abrasive alloys should look elsewhere.

Build Integration

The tap requires a compatible tap wrench or T-handle for manual operation and a 75 percent thread drill size U hole prepared to the correct depth. Its straight flute design works with standard cutting fluids to manage heat and chip formation during the threading process. The H3 limit ensures the finished thread meets the 2B fit specification without additional gaging steps.

How it compares

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

Price $14.99
Cheaper than about 77% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

Which tap wrench size fits the 3.16 in overall length and square drive of this C54654 tap?

A standard tap wrench that accepts the square on a 7/16"-14 H3 tap will engage the 3.16 in body; match the wrench to the tap's square dimension rather than the overall length.

Can I run this H3 limit tap in a hole previously threaded with an H1 or H2 tap without binding?

The H3 limit cuts a slightly larger pitch diameter than H1 or H2, so it will remove additional material and may feel tighter at first but will not bind if the hole is clean and lubricated.

How do I verify the new threads meet the 2B class of fit after tapping?

Pass a 7/16"-14 2B GO thread gauge fully through the hole; the NO-GO gauge must not enter more than three turns, confirming the 2B fit.

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