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
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