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Small bright metal spiral-point tap with two flutes

Cleveland

Cleveland C57031 Spiral Point Tap #2-56 UNC 2 Flutes Bright

SKU CH-HV01-PVNMV

A spiral-point tap for cutting #2-56 UNC threads with two flutes and a bright finish

  • Product typeTaps
  • Spiral point pushes chips forward for cleaner through-holes
  • #2-56 UNC thread cuts precise fine-pitch internal threads
  • Two-flute design balances strength and chip clearance in tight spaces
  • Bright high-speed steel resists wear without coating buildup
  • H2 limit and 2B class ensure consistent fit with 75 % thread engagement

What this tap is and who uses it

The Cleveland C57031 is a spiral point tap for cutting UNC #2-56 threads in through holes. It is made from high speed steel with a bright uncoated finish and has two flutes. Machinists and maintenance technicians choose it for general purpose threading where chip evacuation ahead of the tap is preferred.

Thermals noise and power in normal use

As a hand operated or machine driven cutting tool it generates no electrical noise or power draw. Cutting heat depends on the workpiece material, cutting speed and lubrication used. Proper coolant or cutting oil controls temperature and extends tool life during repeated threading operations.

Build quality and day to day implications

High speed steel construction provides hardness and wear resistance for threading ferrous and non ferrous metals. The H2 thread limit and 2B class of fit produce standard tolerance threads. A 1.73 mm drill size prepares holes for 75 percent thread engagement. Right hand cutting direction matches conventional tap holders and CNC tooling.

How it compares

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

Price $13.99
Cheaper than about 80% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeTaps

Questions about this item

How do I install the #2-56 spiral point tap and what step is often missed?

Use a 1.73 mm drill for the 75 percent thread hole, then run the tap straight with cutting fluid; the step often missed is clearing chips every few turns to prevent binding in the 7/16 in thread length.

What maintenance or replacement will this H2 limit tap need later?

The bright uncoated high-speed steel flutes dull with use; replace the tap when threads show tear-out or the H2 limit no longer holds a 2B class of fit.

What limit appears first during sustained tapping with this 2-flute tool?

Chip evacuation in the 7/16 in thread length becomes the limiting factor; packed flutes increase torque and risk breakage before the H2 tolerance wears out.

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