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Registered
Join Date: Sep 2009
Location: North of You
Posts: 9,160
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Vibration Loosening of Bolts and Threaded Fasteners
From above:
As a result, a rationalisation of the variety of locking devices used by such major companies has occurred. For example, conventional spring lock washers are no longer specified, because it has been shown that they actually aid self loosening rather than prevent it. There are a multitude of thread locking devices available. Through the efforts of the American National Standards Subcommittee B18:20 on locking fasteners, three basic locking fastener categories have been established. They are: free spinning, friction locking, and chemical locking.
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12-15-2014, 09:19 AM
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