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Small silver metal hand tap with three straight flutes and threaded tip

Helicoil

Helicoil 02CPB #2-56 Straight Flute Hand Tap

SKU CH-RQSB-RZ39Q

Cuts #2-56 UNC threads in 1 7/8 in high-speed steel with three straight flutes and plug chamfer

  • Product typeHole, Drill, Bore & Wire Gauges
  • Thread repair for #2-56 UNC holes
  • Plug chamfer starts threads easily in through-holes
  • Three straight flutes clear chips efficiently
  • High-speed steel resists wear on repeated use
  • Bright uncoated finish suits general-purpose tapping

Thread Repair Tap for #2-56 Holes

This Helicoil straight flute hand tap creates UNC threads sized #2-56 for screw thread inserts. The high speed steel tool features a bright uncoated finish and three flutes. Its plug chamfer starts threads cleanly in through holes or blind holes with adequate depth.

For Mechanics Restoring Damaged Threads

Technicians repairing stripped threads in soft metals will find this tap matches the STI standard. It is not suited for cutting standard bolts directly, nor for users needing a taper or bottoming chamfer style. Left-hand thread applications require a different tool.

#2-56 UNC Thread Size with H1 Limit

The thread size and H1 limit determine whether this tap fits the insert being installed. Verify the insert specification calls for #2-56 UNC and H1 tolerance before purchasing.

How it compares

Measured against everything we stock in Utility & Specialty Hand Tools, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 68% of the 2,474 comparable items (median $23.99).

Specifications

Product
Brand nameHelicoil
Product typeHole, Drill, Bore & Wire Gauges

Questions about this item

What comes in the box with the #2-56 hand tap?

The package contains the single Heli-Coil 02CPB straight flute hand tap. No drill bits, gauges or handles are included; those must be purchased separately if required.

Which tap specification should I select for a #2-56 UNC thread?

Choose the H1 limit, plug chamfer, three-flute, high-speed steel tap with a 9/16 in thread length and 1 7/8 in overall length — the only version listed for this thread size.

How does the H1 thread limit affect the finished hole?

The H1 limit produces a standard class 2B internal thread, giving correct fit for #2-56 UNC screws when the tap is used at its 9/16 in cutting depth.

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