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Straight flute hand tap #10-24 bright finish three flutes

Helicoil

Helicoil #10-24 Straight Flute Hand Tap 3 Flutes

SKU CH-M8ZZ-D2RT0

Straight-flute hand tap cuts #10-24 UNC threads in through-holes with three flutes for efficient chip clearance

  • Product typeHole, Drill, Bore & Wire Gauges
  • #10-24 thread size matches standard UNC fasteners
  • Plug chamfer starts threads cleanly in through-holes
  • Three flutes clear chips efficiently during tapping
  • High-speed steel construction resists wear in repeated use
  • Uncoated bright finish suits general-purpose threading tasks

Thread Repair Tap for #10-24 UNC

This Heli-Coil straight flute hand tap creates the precise threads needed to install screw thread inserts in a #10-24 UNC size. The high-speed steel construction with an uncoated finish suits general purpose threading in maintenance and repair environments. Three flutes provide balanced chip clearance during hand operation.

Replaces Worn or Damaged Thread Cutting Tools

The tap upgrades from dull or incorrect taps that produce oversized or rough threads which prevent inserts from seating properly. The jump is worth it when existing threads are stripped and a reliable STI thread form is required to accept a Heli-Coil insert. Plug chamfer starts threads easily in through holes or blind holes with adequate depth.

Verify Hole Size and Material Compatibility

Check that the drilled hole matches the STI tap drill size for #10-24 UNC before ordering. Ensure the workpiece material is suitable for high-speed steel taps without coolant requirements beyond standard cutting oil. Confirm the application calls for a right-hand thread and H2 thread limit to match the insert specifications.

How it compares

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

Price $13.99
Cheaper than about 70% of the 2,474 comparable items (median $23.99).

Specifications

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

Questions about this item

What drill size does the #10-24 STI tap require for the correct hole?

Use a standard #10-24 STI drill size to produce the oversize hole that accepts the screw thread insert before tapping.

How do you start the plug-chamfer tap straight in the hole?

Apply steady axial pressure while turning the tap clockwise; the plug chamfer centres itself but will cross-thread if forced off-axis.

When should the uncoated high-speed steel tap be replaced?

Replace it when the cutting edges dull, chips clog the flutes, or threads show tearing instead of clean crests.

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