Nylon Thread Locking Patch


Pre-applied Nylon patch thread locking is a prevailing torque patch used to prevent fasteners becoming loose due to vibration or no load. 

When the fastener is assembled onto a mating thread, the patch forces the threads of the fastener to be wedged tightly against the mating thread,  providing resistance to loosening. 

The amount of nylon applied is controlled and is designed to ensure a good lead-in and provide a gradual development of locking torque to pre-determined specifications. 

The patch when applied is permanently fused onto the screw thread of the fastener and increases the prevailing removal torque by acting as a wedge, allowing the screw to be locked in any position upon assembly.

This process provides excellent vibration resistance and torque performance for all applications requiring controlled loading, re-usability and eliminating the need for secondary locking devices and hand-applied liquid adhesives. 

Available either as a 180-degree patch or a 360-degree gas seal patch around the thread. 

Nylon patches are applied to a range of headed fasteners, studs, and plugs in steel, aluminium, stainless steel or brass.


nylon patch on fastenerpatch














Eslok® Red  Long-lok® Green  Tuflok® Blue ND® Yellow Inlex® Blue   









 list of patch types