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Ask A Pro \  Lock nuts on threaded adjusters?

Lock nuts on threaded adjusters?

Ask A Pro Q & A
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replies 4
following 4
 
mini4life   +1y
Max, I am building a four link with threaded adjusters. I used grade 9, 3/4-16 bolts, they are only adjustable on one end. Do I still need to run lock nuts to keep everything tight?
mini4life   +1y
Edit: I meant to say jam nuts, not locknuts.
mindlissmetalfab   +1y
You always run jam nuts to tighten up any play in the threads. A little bit of back and forth movement from the clearances in the threads will get worse and worse over time and eventually cause problems.

We had a customer with an SD 5 link who stripped all the threads off one of his adjustable ends because he was driving with a loose jam nut. Nothing was holding the bar together it was just a sliding fit where the threads should have been. Always run jam nuts and check them regularly.
AVTekk   +1y
agreed wholeheartedly
BioMax   +1y
Yeah... Me too.

A thread that isn't tight is exponentially weaker then a properly tightened part.
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