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The Delta Protekt washer system consists of a pair of washers with a wedge-locking action, which is a unique method that uses tension instead of friction.
The key is the difference in angles. Since the angle A is larger than the angle B , the pair of washers expand more than the corresponding pitch of the thread.
The washers positively lock the fastener in a joint which is subjected to extreme vibration or dynamic loads.
This unique bolt securing system uses tension to make the bolt self-locking.
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