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Cleveland #4-48 UNF spiral point tap plug, cobalt, black oxide finish, three flutes

Cleveland

Cleveland #4-48 UNF Spiral Point Tap Plug, 3 Flutes, Cobalt, Black Oxide

SKU CH-JG07-B77PG

Cuts #4-48 UNF threads in tough metals using a three-flute cobalt spiral-point tap with black-oxide finish, 2 13/64 in overall length and 43/64 in thread length

  • Spiral-point design pushes chips ahead for smoother threading
  • Cobalt construction with black oxide resists wear in tough materials
  • #4-48 UNF thread with 2B class of fit for precise engagement
  • Three flutes balance chip clearance and cutting strength
  • 75 percent thread drill size 2.32 mm guides accurate hole prep

Cleveland #4-48 UNF Spiral Point Tap

This Cleveland spiral point tap cuts #4-48 UNF threads in through-hole applications. The cobalt construction with black oxide finish provides wear resistance for repeated use in metalworking tasks. It suits machinists and maintenance technicians who need reliable thread creation in ferrous and non-ferrous materials.

Right-hand 2B class of fit with 3 flutes

The tap follows a 2B class of fit with a right-hand thread direction and three flutes for chip evacuation. Thread length is 43/64 in within an overall length of 2 13/64 in. The 75 percent thread drill size is 2.32 mm. These fixed dimensions define the practical limits of the tool for the specified thread standard.

Verify drill size and material compatibility

Before ordering, confirm that a 2.32 mm drill bit is available for the 75 percent thread preparation. Ensure the workpiece material suits cobalt tooling and that the 2B class of fit meets the assembly requirements. The tool is restricted from sale in certain states, so check local regulations.

How it compares

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

Price $15.99
Cheaper than about 73% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

Should I pick the #4-48 UNF size or a different thread specification?

Choose this tap when the job calls for a #4-48 UNF thread; the 2B class of fit and 75 percent thread depth are built to that exact specification.

What does the 2 13/64 in overall length mean when the tap is in the chuck?

The 2 13/64 in overall length includes a 43/64 in thread length, giving enough reach for through holes while keeping the shank short enough for standard holders.

How does the spiral point design affect chip flow in a blind hole?

The spiral point pushes chips ahead of the flutes, so it is intended for through holes; for blind holes a bottoming or spiral flute tap would clear chips better.

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