Heli-Coil® Screw Thread Insert Tap

Finishing – Manual or Machine Tap

  • also known as intermediate taps
  • 4 thread chamfer
  • used for manual hand or machine tapping in through holes and blind holes where ample chip clearance is available
  • lead chamfer permits easier starting and requires less tapping torque than bottoming taps

Spiral Flute – Machine Tap

  • 2 thread chamfer
  • can be used manually or attached to tapping machine tool
  • specially designed for efficient removal of stringy chips out of deep or blind holes in soft materials (eg. aluminium)
  • spiral flutes aid in directing the swarf backwards out of the hole

Spiral Point – Machine Tap

  • 2 thread chamfer
  • similar to spiral flute taps except that they are more suitable for through holes on less abrasive materials
  • spiral point taps incorporate an angular grind at the point end of the tap which shears chips and drives the swarf forward of the tap
  • used widely in long through holes and blind holes with ample chip clearance