GrindGuide

Spiral drill

  • Drilling
  • Spiral drill

Spiral drills are also sometimes known as twist drills or spiral groove drills. Spiral drills can be recognized by their sharpened head. HSS drills usually have a point angle of 118° and carbide drills a point angle of 142°. The term spiral drill refers firstly to the supply of cooling lubricant via the spirals and secondly to the removal of chips via the spirals.