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Cleveland C54511 straight-flute hand tap, bright high-speed steel, 5/16"-18 UNC

Cleveland

Cleveland C54511 Straight Flute Hand Tap 5/16"-18 UNC pneumatic accessory

SKU CH-AYGC-VHXSW

A three-piece high-speed steel hand tap set cuts 5/16"-18 UNC threads with a bright finish and H3 limits

  • Product typeTaps
  • Straight-flute design clears chips in through-holes
  • 5/16"-18 UNC thread fits standard coarse fasteners
  • High-speed steel construction resists wear during hand tapping
  • Four-flute geometry improves thread accuracy and strength
  • Bright uncoated finish suits general-purpose steel and iron work

Cleveland C54511 Straight Flute Hand Tap

The Cleveland C54511 is a three-piece straight flute hand tap set designed for cutting internal UNC threads. It suits maintenance technicians and machinists who need to create or repair 5/16"-18 threads in steel, cast iron or non-ferrous metals using hand or light machine operations.

Replacing worn or undersized taps

Switch to this kit when existing taps produce oversized threads, chip poorly in through holes or have dulled flutes that increase torque. The H3 limit and 3B class of fit deliver tighter tolerance control than standard H1 or H2 taps, reducing scrap on critical assemblies.

Build integration

The bright high-speed steel construction requires cutting fluid or paste to manage heat and extend tool life. A number F drill at 75 percent thread engagement prepares the hole, while the 1 1/8 inch thread length and 2 23/32 inch overall length fit standard tap holders and T-handle wrenches. Right-hand thread direction matches common fastener conventions.

How it compares

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

Price $22.99
Cheaper than about 58% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

What drill size matches the 75 percent thread spec for this 5/16"-18 UNC tap?

Use a size F drill bit to prepare the hole before tapping with this 5/16"-18 UNC tool.

How do I start the tap straight so the threads cut cleanly?

Align the tap perpendicular to the workpiece, apply steady pressure, and turn the tap wrench slowly for the first few threads.

When should I replace the tap if the cutting edges wear down?

Replace the high-speed steel tap when threads become rough, oversized, or require excessive force to cut.

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