SEMS screws combine a screw and washer into a single, pre-assembled fastener for quicker, more efficient installation. Available in socket head, pan head, and hex head styles, SEMS screws reduce part count, streamline assembly, and eliminate the risk of lost washers.
The captive washer can take many forms including flat washers, split lock washers, external or internal tooth (star) washers, and even Belleville (conical spring) washers to suit a wide range of mechanical and electrical applications.
Ideal for both manual and automated assembly, SEMS screws deliver consistent clamping force and are trusted across automotive, electronics, and industrial manufacturing industries.
