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Helicoil M24x3.00 straight flute hand tap bright finish 4 flutes

Helicoil

Helicoil 4687-24 M24x3.00 Straight Flute Hand Tap 4 Flutes

SKU CH-RV8E-AH3DJ

Metric coarse STI tap for M24x3 threads with 4 flutes and plug chamfer

  • Product typeHole, Drill, Bore & Wire Gauges
  • M24x3.00 coarse thread cuts precise internal threads
  • 11 mm overall length reaches deep holes
  • 09 mm thread length engages full depth
  • High-speed steel construction resists wear during tapping
  • Four-flute design clears chips for smooth cutting

Thread Repair Tap M24x3.00

The Helicoil 4687-24 is a straight flute hand tap designed for creating STI threads in M24x3.00 metric coarse holes. It suits technicians and engineers who repair stripped or damaged threads in automotive and industrial assemblies.

Replaces Worn Taps And Oversize Dies

This tap upgrades from standard bottoming taps or worn tooling when a helical insert is required. The jump is worth it when the original threads are beyond chasing and a stronger insert lock is needed for high-stress fasteners.

Fits Standard Tap Wrenches And Drill Fixtures

The 138.11 mm overall length and 65.09 mm thread length work with common metric tap holders. High speed steel construction with bright finish frees up coating costs while the four-flute plug chamfer clears chips efficiently in through and blind holes.

How it compares

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

Price $126.99
Pricier than about 90% of the 2,474 comparable items (median $23.99).

Specifications

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

Questions about this item

What hole size does the M24x3.00 STI tap require?

The tap is designed for STI thread inserts; the correct drill diameter depends on the insert specifications, not the tap alone.

How do I start the 4-flute plug-chamfer tap straight in the hole?

Align the tap perpendicular to the workpiece, use a tap wrench on the square shank, and apply steady forward pressure while turning clockwise.

When should the H4-limit high-speed-steel tap be replaced?

Replace it when threads show chatter, tearing, or oversize pitch diameter, indicating the cutting edges are worn beyond the H4 tolerance.

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