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Case Study

Failure of an M24 Engine Mounting Bolt

Proper tightening of an M24 mounting bolt is crucial to prevent loosening and joint movement, eventually leading to fatigue failure. In this article, Dr. Bill Eccles illustrates the solution to self-loosening—an M16 flange headed property class 12.9 bolt—in detail. Dr. Eccles further explains the importance of adequate preload by illustrating the consequences of joint movement on the M24 bolt due to low preload.

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