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Cleveland spiral flute tap, 1/2-13 UNC, cobalt, black oxide finish, three flutes

Cleveland

Cleveland C98122 Spiral Flute Tap 1/2-13 UNC Cobalt 3 Flutes

SKU CH-1EEW-95AG0

Spiral flute tap cuts 1/2-13 UNC threads in cobalt steel with three flutes and black oxide finish

  • Product typeTaps
  • Cuts clean threads in deep holes with spiral flute design
  • Cobalt construction resists wear on tough materials
  • Three flutes balance chip removal and cutting strength
  • Semi-bottoming style reaches near-bottom threads in blind holes
  • Black oxide finish reduces friction and prevents rust

Cleveland C98122 Spiral Flute Tap

The Cleveland C98122 is a spiral flute tap designed for cutting internal threads in metal. It suits machinists and maintenance technicians who need reliable threading performance in production or repair work.

Semi-Bottoming Design

This tap features a semi-bottoming chamfer with three flutes for efficient chip evacuation in blind holes. The spiral flute geometry pulls chips upward, reducing the risk of tap breakage when threading deeper than a standard plug tap allows.

Cobalt 1/2-13 UNC Fit

Verify the workpiece material suits cobalt tooling and that the 1/2-13 UNC thread specification matches the required fastener. Ensure the drilled hole diameter corresponds to the 27/64 inch drill size for 75 percent thread engagement. Confirm right-hand thread direction aligns with the application.

How it compares

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

Price $46.99
Pricier than about 65% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

What drill size is needed for the 1/2-13 UNC tap?

Use a 27/64 in drill for the 75 percent thread specification before tapping the hole.

How deep can the semi-bottoming tap cut threads in a blind hole?

The thread length is 1 17/32 in and the semi-bottoming design cuts close to the bottom of a drilled hole.

When should this cobalt tap be replaced during production use?

Replace the tap when the black oxide coating wears off the flutes or when thread quality drops below the 2B class of fit.

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