"asdfasdf" wrote in message
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On 6/6/2013 10:51 PM, PrecisionmachinisT wrote:
"asdfasdf" wrote in message
...
When using a nut, lock washer and bolt, should you also use a flat
washer between the object and the lock washer? I have seen it done
a million times that way but it seems the flat washer defeats the
purpose of the lock washer. I assume the lock washer is there
to dig in a bit to the object and the nut to keep it from
loosening. The flat washer seems like it would allow the
lock washer to rotate without digging in to the object.

Anyone know?


http://en.wikipedia.org/wiki/Washer_...ocking_washers




Wikipedia ruins everything. I was expecting a big argument to start.

Well, I'd say it depends...for instance, a soft washer with a large diameter
(fender washer) likely would provide more friction against the material
being bolted and so I have to at least
partially disagree with wiki on this..