Quote:
Originally Posted by cg285
i will sometimes use lock washers but because i want a thicker washer not because they give any benefit from loosening. there are studies that suggest fasteners loosen easier with lock washers than with flats or nothing.
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He's correct, it is a proven industry standard that in a properly torqued situation that a lockwasher is useless.
However a grade 8 lockwasher does a great job of spacing and keeping a bolt head from fretting into the base part it is securing.
The v8 engines had lockwasher SIZE solid (Bellville?) washers under the ex manifold bolts on some engines.