Set-Screw Information & Data

Dimensional Charts for Metric Set Screws and Imperial Set Screws.

A set screw is a type of screw generally used to secure an object within or against another object. The most common examples are securing a pulley or gear to a shaft.

Set screws are usually headless (also called blind), meaning that the screw is fully threaded and has no head projecting past the major diameter of the screw thread.

A blind set screw or grub screw, is almost always driven with an internal-wrenching drive, such as a hex socket (Allen), star (Torx), square socket (Robertson), or slot.

The set screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object.

It exerts compressional or clamping force through the bottom tip that projects through the hole.

Dimensions shown are in Inches, if you wish to convert to mm, please use our universal converter.

SET SCREW DIMENSIONS - METRIC - ASME/ANSI B18.3.6M