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Re: Loose Nuts

To: clabaw@jpl.nasa.gov, spridgets-mod@autox.team.net, spridgets@autox.team.net
Subject: Re: Loose Nuts
Date: Thu, 14 Mar 2002 20:21:16 EST
In a message dated 3/14/02 4:31:00 PM Eastern Standard Time, 
clabaw@jpl.nasa.gov writes:


> Anyway, all's well that ends with most of my hide in the original location.
> 
> 

How lucky you found the problem before having to pay the price.  I use them, 
everyone uses them, mostly because they were used before.  "Why did you use 
the lock washer on that bolt?"  "Because there was one on there when I 
removed the nut." But the split-ring "lock" washers are of no real use, and 
are actually detrimental in many uses.  A properly torqued fastener with a 
flat washer is a stronger and more dependable connection.  As a fastener 
representative said, "You keep buying them and we will keep making them."  
Your story also underscores the fact that "nyloc" nuts should not be used in 
critical usages.   Instead there are all steel "locking" nuts that work much 
better and will not melt to uslessness if heated, either by friction or by 
exhaust or engine heat.

--David C.

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