Electronics > Projects, Designs, and Technical Stuff

Serial port lock nuts always coming loose

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tkamiya:
I think one of very annoying thing on PCs are those DB<blah> connectors having lock nuts coming loose.  I can't tighten them too much or otherwise the thread on bolt or nut will break. 

I had number of VGA connectors and serial ports come loose.  Are there anything out there that won't come out like these?  Long time ago, I've seen a rectangular piece used in place of stud/screw combination but I have not seen them recently.

Someone help before I go "nuts".....

dom0:
Loctite

hendorog:
I never screw them in as long as they are a tight fit. Occasionally they fall out but that is better than having to unscrew the bastards while lying awkwardly under a desk.

tkamiya:
Locktite is nice but I need to be able to take it apart when I need to. 

sokoloff:
Loctite 242 ("blue Loctite") easily comes apart with hand tools.
Loctite 271 ("red Loctite") is intended to be permanent, but on threads this small, also tends to be removable without excessive heat.

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