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Straight flute hand tap M3x0.5 high speed steel uncoated 51mm overall length

Helicoil

Helicoil 4687-3 M3x0.5 Straight Flute Hand Tap

SKU CH-TJ8Y-YRYH6

M3x0.5 high-speed steel hand tap with 51 mm overall length and 17 mm thread length

  • TypeHole, Drill, Bore & Wire Gauges
  • M3 x 0.5 metric coarse thread for precise hole tapping
  • Plug chamfer starts threads cleanly in through or blind holes
  • Three straight flutes clear chips efficiently during hand operation
  • 00 mm overall length with 17.00 mm thread reach
  • High-speed steel construction resists wear in repetitive use

M3x0.5 thread repair tap

The Helicoil 4687-3 is a straight-flute hand tap designed for creating internal threads that accept M3x0.5 screw thread inserts. It suits technicians and hobbyists who need to repair stripped or damaged holes in softer metals using standard hand tools.

High-speed steel holds edge in repetitive use

Made from uncoated high-speed steel with three flutes and a plug chamfer, the tap cuts cleanly through the full 17.00 mm thread length. The bright finish resists galling during repeated passes, while the D1 limit ensures consistent pitch diameter across multiple holes.

Verify hole size and material compatibility

Confirm the drilled hole matches the required tap drill for M3x0.5 STI threads before starting. The 51.00 mm overall length requires adequate workpiece access, and the right-hand cut direction must suit the application. Uncoasted steel performs best in aluminium and mild steel rather than hardened alloys.

Highlights

  • M3 x 0.5 metric coarse thread for precise hole tapping
  • Plug chamfer starts threads cleanly in through or blind holes
  • Three straight flutes clear chips efficiently during hand operation
  • 00 mm overall length with 17.00 mm thread reach
  • High-speed steel construction resists wear in repetitive use

Specifications

BrandHelicoil
TypeHole, Drill, Bore & Wire Gauges

Questions about this item

How much heat or noise does the HELI-COIL 4687-3 tap generate during extended use?

As a manual hand tool, it produces no measurable heat or noise during operation; all cutting force comes from the operator.

What holder or handle must I already own to turn the 4687-3 tap?

A standard tap wrench sized for the shank of an M3x0.5 STI tap is required; the tap itself has no built-in handle.

Will the D1 thread limit on this tap match the existing M3x0.5 holes in my older parts?

The D1 limit creates a slightly oversized thread for helical-coil inserts, so it will not cut a standard M3x0.5 thread for a regular bolt.

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