Cross thread lock rings are reusable locking elements suitable for fitting to many threaded assemblies including shaft nuts, back nuts and pipe fittings.

Designed for internal or external grooves in hot or cold applications, the self-locking polygonal form provides a friction lock between two diameters. Manufactured in silver plated, heat resisting wire in sizes from 9mm to 200mm. Cross is the only approved supplier of thread lock rings manufactured to SBAC specification, standard number AS42951.