Fundamentals of Key Locking Inserts: Mechanical Principles and Locking Mechanisms

Why "Keys" are the Ultimate Answer to Anti-Rotation
Key Locking Inserts (commonly known as Keenserts or Keyserts) are solid bushing fasteners featuring pre-installed "locking keys."
This article explains the mechanics: once installed, these keys are driven into the parent material, creating a mechanical interference that completely prevents the insert from rotating due to vibration or torque.
We explore how the "solid-wall" construction provides significantly higher pull-out strength compared to wire inserts.