1/4-20 MACHINE SCREW NUT 18-8 STAINLESS

Machine screw nuts are typically a six-sided internally threaded fastener with a flat top and chamfered corners. They are designed for use with machine screws.

Machine screw nuts are also available as a four-sided, internally threaded fastener with a flat top and bottom, without chamfer. However, user interest in square machine screw nuts has declined significantly during the past several years.