mikehaugen
Elite Member
Another method I like are serrated flange nuts, especially on aluminum
I try to avoid them. :laughing:
But have tore down and rebuilt plenty of small block mopars and chevys.
As well as countless new 4 and 6 cylinders of various makes when I was on a big scrapping spree a few years back.
YUP
Helical Spring Washers
Lock washers are good for those that sell lock washers.
Is a lock washer an effective torque retention device? - Mechanical engineering other topics FAQ - Eng-Tips
I have always wondered if spring washers help.
The big lock washers used to hold the pintle eye on a interstate trailer sure gouge the nut when you take them aloose though. Seems like they provide some resistance to loosening.
Like these:
As has been mentioned, threadlock is meant to hold the fastener tight in place. But AFAIK, never-seize is only meant to make the fastener easier to remove. I don't think part of its function is intended to lock the fastener in place. Although I don't know that for sure.
Also, head bolts and many other engine fasteners are fine threaded which are less prone to work loose, than are the ordinary, more coarse threaded fasteners.
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Also, a nut can be removed much easier by hitting the exposed threads of the bolt with a small wire brush, before backing off the nut.