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Cleveland spiral point tap 5/8"-11 UNC 3 flutes bright finish

Cleveland

Cleveland C57507 Spiral Point Tap 5/8"-11 UNC 3 Flutes Bright

SKU CH-7526-QPMKR

A spiral-point tap cuts 5/8"-11 UNC threads in through-holes with three flutes and a bright high-speed steel finish

  • Spiral-point design pushes chips ahead for smoother threading
  • 5/8"-11 UNC thread size matches standard coarse-pitch holes
  • High-speed steel construction resists wear during repeated tapping
  • Three-flute geometry balances chip clearance with cutting strength
  • Bright uncoated finish suits general-purpose ferrous and non-ferrous materials

Professional Threading Tool

The Cleveland C57507 spiral point tap cuts 5/8"-11 UNC threads in through-holes. Its three-flute design pushes chips ahead of the cut, making it suited for machinists and maintenance technicians who need reliable internal threads in steel or similar materials.

High-Speed Steel Performance

Bright uncoated high-speed steel construction handles the heat generated during normal tapping operations. The spiral point geometry reduces cutting torque and helps maintain consistent thread quality without excessive force on the tool or workpiece.

Build Integration

A 13.60 mm drill creates the correct 75 percent thread depth for a class 2B fit with H3 limits. The 3 13/16 in overall length and 1 13/16 in thread length reach standard hole depths, while the right-hand plug chamfer starts easily in existing bores.

How it compares

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

Price $40.99
Pricier than about 62% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND

Questions about this item

How do I start the C57507 spiral-point tap in a 5/8"-11 UNC hole without breaking it?

Drill the hole to 13.60 mm for a 75 percent thread, then enter the tap straight and apply steady forward pressure; the spiral point pushes chips ahead so you do not need to reverse until the thread length of 1 13/16 in is reached.

When will the C57507 tap need to be replaced?

Replace it when the H3 limit flutes show visible rounding or when threads gauged to class 2B start to exceed tolerance; high-speed steel wears gradually, so inspect after each batch of holes.

What limits how many 5/8"-11 holes I can tap continuously with the C57507?

Chip evacuation and heat buildup in the uncoated high-speed steel flutes are the first limits; the spiral point helps, but sustained use without coolant will dull the cutting edges quickly.

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