Tried explaining to my 4 year old the purpose of the lockwasher and she asked how it worked? I came to the realization I didn’t know. Help my educate my child by educating me please!
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Throwing my two cents in here. I’ve read that NASA doc before myself (mechanical engineer).
Those split washers aren’t exactly useless, as they can help if you need to blind tighten the head of a fastener, having that spring tension on the nut helps keep it in place while you turn the other side. Often this means instead of having to hold two wrenches (since otherwise the nut will spin freely) you can hold just one and get it tightened.
But yeah doesn’t seem like they help to prevent loosening over time.
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