FIX-LEM-54 is a type of fastener that is used to secure items together. It is an adjustable locking connection system that helps to provide a secure and vibration-proof joint. It features a tension cam that allows for quick and easy installation and a locking pawl that engages with the nut to provide a secure hold. The FIX-LEM-54 is designed for use with M6 nuts and screws and is ideal for fastening light assemblies.