Forum Discussion
HMS_Beagle
May 25, 2016Explorer
In reading the thread and looking at the pictures, I kind of figured that retaining washer was what the spot faces were for. The problem with them is that the aluminum surrounding the hole will be loaded in bending stress because the aluminum directly under the nut has been machined away. Normally it would be loaded in compression by the nut. Not a good idea generally speaking, with very careful engineering, attention to fatigue limits, and good controls on exactly how they get mounted and torqued maybe you can get away with it - but here in the real world, not a good idea.
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