Positive locking device
A positive locking device is a device used in conjunction with a fastener in order to positively lock the fastener. This means that the fastener cannot work loose from vibrations. The following is a list of positive locking devices:
- A split beam nut
- A castellated nut and a split pin
- A hex nut or cap screw and a tab washer
- A hex nut or cap screw and a lock plate
- Safety wiring with various types of fasteners