Search our Products

View our Categories

COUNTERBORE

A counterbore is a cylindrical flat-bottomed hole that enlarges another coaxial hole, or the tool used to create that feature. A counterbore hole is typically used when a fastener, such as a socket head cap screw, is required to sit flush with or below the level of a workpiece's surface.

Whereas a counterbore is a flat-bottomed enlargement of a smaller coaxial hole, a countersink is a conical enlargement of such. A spotface often takes the form of a very shallow counterbore.

As mentioned above, the cutters that produce counterbores are often also called counterbores; sometimes, to avoid ambiguity, the term counterbore cutter is used instead.

Unit 13, Biz Afrika Park,

Entrance in Fakkel str,

Silverton, Gauteng

Tel: Ryno - +27726979047
      Dillon - +27827819717
      Willie - +27614847542
Email: admin@tooltraders.co.za

  • Facebook Social Icon

© 2019 Tool Traders