Screwdriver bit glossary

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Slipping / Camming out

  Screwdriver bit and screw  

When driving certain types of screws, the screwdriver bit can slip out of the screw head, when a lot of torque (turning force) is applied.


This is also known as ‘camming-out’ and can result in the screwdriver bit damaging the screw head or the work surface.


Torx screws and screwdriver bits are designed to prevent cam out.


Stripping a screw head

  Stripped screw  

A stripped screw head is the term used to describe a screw that has been damaged by a screwdriver bit.


Stripped screws are the result of a number of things:


  • General wear and tear

  • Using the wrong size or type of bit for the screw

  • The screwdriver slipping out of the screw’s drive and damaging its surface.

   Wonkee Donkee says; A stripped screw is usually a ruined screw. If a screw’s drive has become misshapen, the screwdriver bit may not be able to remove it.