Wing Bolt tightness on backplate
- Thread starter BlueTrin
- Start date
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If their size is in imperial units, so is the thread.
OP
BlueTrin
Scallops aficionado
Random Dude
Contributor
I tried using rubber washers under the flat washers, and they lock pretty well, provided I tighten it enough in the first place that the rubber is compressed flat.
Just had to change periodically since the rubber might get all hard and inflexible from all the salt water exposure.
Tried lock washers but dont really work, plus there's the NASA research quite some time ago questioning the efficiency of lock washers.
Just had to change periodically since the rubber might get all hard and inflexible from all the salt water exposure.
Tried lock washers but dont really work, plus there's the NASA research quite some time ago questioning the efficiency of lock washers.
lowlysubaruguy
Contributor
What about blue lock tight or fingernail polish. Are either of these a no no my concern would be the square hole in the back plate starting to get eaten away if you removed them frequently which could be the case as I have a weight that bolts through here I might be removing and installing it more often depending on the trip im taking. My new wing showed up tonight and for a fact I could see the wing nuts being loose after a boat ride or any vibration for a period of time.
A drop of blue loctite will do no harm but periodic torque check is still mandatory imho.
Aqua-Andy
Contributor
I have not had an issue with either regular wing nuts or delrin nuts. The recommended torque for a 5/16-18 grade 5 bolt is 17 lbs/ft. This is way higher than any mortal can tighten using their fingers so feel free to use an adjustable wrench to snug it up a little. You will not break the bolt unless you're trying. Don't bother with the lock washers they don't do anything Video on a Junker Fastener Vibration Test .
garyh
Contributor
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common, I suspect grommets in the wing are compressing
Anthony A.
Contributor
On my halcyon sta, I kept the original screws but bought a pair of DSS delrin "knobs". My method is to hand tighten them and then wiggle the bp and sta whilst continued to hand tighten further. I can do 2 dives or more and they are solud, never had them even remotely loosen. I retighten them in the morning of every day trip but never had them loosen.
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