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Cleveland straight-flute tap, bright uncoated finish, four flutes, bottoming chamfer

Cleveland

Cleveland C54733 Straight Flute Tap 1/2"-13 Bottoming 4 Flutes UNC pneumatic accessory

SKU CH-8M12-3R8J1

Cuts 1/2"-13 UNC threads with a four-flute, bottoming straight-flute tap made from high-speed steel

  • TypeTaps
  • Cuts 1/2"-13 UNC threads with four straight flutes
  • Bottoming design threads close to the bottom of blind holes
  • High-speed steel construction resists wear during repeated tapping
  • 75 percent thread drill size 27/64 in ensures accurate hole preparation
  • Right-hand H5 thread limit meets Class 2B and 3B fit standards

Thread Size and Pitch

This Cleveland straight flute tap cuts internal threads at 1/2 inch minus 13 threads per inch. The UNC standard suits general fastening work in steel, aluminium and cast iron. High speed steel construction resists wear during repeated hand or machine tapping operations.

Bottoming Design and Flute Count

The bottoming chamfer lets threads form close to the bottom of a blind hole where a taper or plug tap cannot reach. Four straight flutes provide chip clearance and keep the tap running true in through holes. Bright uncoated finish is standard for non-abrasive materials.

Suitability and Limits

This tap suits machinists and maintenance crews cutting 2B or 3B class threads with a 27/64 inch drill size at 75 percent thread depth. It is not for buyers who need coated tool life in stainless steel or high temperature alloys, nor for those who require spiral point or spiral flute geometry for deep blind holes.

Highlights

  • Cuts 1/2"-13 UNC threads with four straight flutes
  • Bottoming design threads close to the bottom of blind holes
  • High-speed steel construction resists wear during repeated tapping
  • 75 percent thread drill size 27/64 in ensures accurate hole preparation
  • Right-hand H5 thread limit meets Class 2B and 3B fit standards

Specifications

BrandCLEVELAND
TypeTaps

Questions about this item

What drill size matches the 1/2"-13 tap for 75 percent thread engagement?

Use a 27/64 in drill for 75 percent thread engagement with this 1/2"-13 UNC tap.

How do you start the tap straight in a through-hole?

Clamp the workpiece, apply cutting fluid, align the tap square to the hole, and turn the tap wrench with steady pressure; the common error is forcing it without lubrication.

When should this high-speed steel tap be replaced?

Replace the tap when threads show chipping, tearing, or when go/no-go gauges indicate the H5 limit is exceeded.

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