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M5x0.8 straight-flute hand tap, bright finish, 64 mm overall, 25 mm thread length, three flutes, plug chamfer

Helicoil

Helicoil 4687-5 M5x0.8 Straight Flute Hand Tap

SKU CH-KGD1-681FK

M5x0.8 metric coarse tap cuts internal threads for STI inserts, high-speed steel with three flutes and plug chamfer

  • TypeHole, Drill, Bore & Wire Gauges
  • Metric M5x0.8 thread cutting for precise repairs
  • High-speed steel construction resists wear during tapping
  • Plug chamfer starts threads smoothly in through-holes
  • Three-flute design clears chips for cleaner cuts
  • 64 mm overall length reaches deeper holes

M5x0.8 Thread Repair Tap

The Helicoil 4687-5 is a straight flute hand tap designed to cut internal threads for M5x0.8 screw thread inserts. It is made from high speed steel with a bright uncoated finish for general purpose threading work. The plug chamfer and three flutes suit through holes and blind holes with adequate chip clearance.

Mechanics Cutting New STI Threads

This tap suits technicians creating fresh threads for Helicoil inserts in metal components. It is not for chasing damaged threads or cleaning existing holes without cutting new material. Users needing a bottoming chamfer for blind holes near the bottom should select a different tap style.

D7 Thread Limit For Insert Fit

The D7 thread limit is the critical specification that ensures the cut hole matches Helicoil M5x0.8 insert dimensions. A different limit class will produce an incorrect pitch diameter and the insert will not seat properly. Verify the D7 requirement before use.

Highlights

  • Metric M5x0.8 thread cutting for precise repairs
  • High-speed steel construction resists wear during tapping
  • Plug chamfer starts threads smoothly in through-holes
  • Three-flute design clears chips for cleaner cuts
  • 64 mm overall length reaches deeper holes

Specifications

BrandHelicoil
TypeHole, Drill, Bore & Wire Gauges

Questions about this item

What thread limit does the M5x0.8 tap reach before it stops cutting cleanly?

The tap is manufactured to a D7 thread limit for M5x0.8 metric coarse threads.

How hot does the high-speed steel get during a full day of hand tapping?

High-speed steel construction resists heat buildup during repeated manual use.

Which tap wrench square size fits the 4687-5 shank?

The straight-flute hand tap has a standard square shank for use with adjustable tap wrenches.

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