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Cleveland C96127 spiral point tap plug, cobalt black oxide finish, three flutes

Cleveland

Cleveland C96127 Spiral Point Tap Plug 3 Flutes 5/8-18 UNF Cobalt Black Oxide

SKU CH-3R2E-YSNF3

Cuts 5/8‑18 UNF threads with a 3‑flute cobalt spiral point for chip‑forward tapping in through holes

  • Cuts 5/8-18 UNF threads cleanly with spiral-point chip ejection
  • Cobalt steel with black oxide resists wear in tough materials
  • Three-flute design balances strength and chip clearance
  • 75 % thread drill size 14.50 mm guides accurate hole prep
  • 2B class of fit ensures reliable assembly tolerance

Cleveland Spiral Point Tap 5/8-18 UNF

The Cleveland C96127 is a cobalt spiral point tap designed for cutting internal UNF threads in through-holes. Its three-flute geometry pushes chips ahead of the cut, reducing torque and improving thread quality in steel and stainless alloys. The black oxide finish adds lubricity and corrosion resistance during repeated use. It suits maintenance technicians and machinists producing Class 2B fits.

Check thread spec and drill size before ordering

Verify the required thread is 5/8 inch diameter with 18 threads per inch in the Unified National Fine series. The tap requires a 75 percent thread drill size of 14.50 mm to produce the correct Class 2B fit. Confirm the workpiece material is compatible with cobalt tooling and that your machine spindle rotates right-hand. Ensure adequate clearance for the overall length.

Fits standard tap holders and CNC tool changers

The tap shank fits industry-standard collets and holders for 5/8 inch UNF tooling, requiring no proprietary adapters. Its 4 21/64 inch overall length and 2 3/32 inch thread length clear most fixture setups without extension. The spiral point design frees the flutes for coolant flow and evacuates chips forward, reducing downtime for chip clearing in deep through-holes.

How it compares

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

Price $42.99
Pricier than about 63% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

Does the tap come with a matching 14.50 mm drill bit or must I buy one separately?

Only the spiral point tap is supplied; a 14.50 mm drill for the 75 percent thread is not included.

When should I choose the 5/8-18 UNF 2B tap instead of another thread size?

Select this tap when the drawing calls for a 5/8 inch diameter, 18 threads per inch Unified National Fine thread with a 2B class of fit.

What does the 4 21/64 inch overall length mean when the tap is in my machine?

The tap measures 4 21/64 inches from end to end, so the holder and workpiece clearance must accommodate that length.

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