Rigging screw - small. Single end design, nickel plated brass, M3 thread, self locking design, 1.2 mm dia stainless steel wire.
This SELF LOCKING rigging screw can be used in a NON SELF LOCKING mode by removing the O ring. Add a normal M3 nut or a Nyloc self locking nut as preferred to provide the lock nut function.
Cost per individual screw only