Confirmat screw

[3] They have blunt tips, large shanks, and often a shoulder, a broad length of unthreaded shank just below the head, which helps hold the screw in position.

[2] Short, shoulderless confirmat screws, whose heads pass through hardware like hinges or drawer slides, may go into unstepped holes.

A confirmat screw can therefore be removed and replaced dozens of times.

[6] Confirmat screws have about twice the shank diameter of woodscrews.

[4] The name comes from the Latin word confirmat, meaning "it makes [something] firm or strong".

Confirmat screws on a sheet of the particleboard material in which they were designed to hold.
Diagram of a hex-headed confirmat screw, made to be turned with an allen key
A confirmat screw holding a butt joint in melamine -coated particleboard.
A specialized stepped drill bit and a screw to match it. The screw is covered with a cosmetic plastic cap. The Z-shaped object is an allen key .