Tack welding locknuts

[RatLabGuy]

I need to tack on some nuts to hold retaining bolts for a battery holder. What's going on the nut is actually a stud so I'd like to use lock nuts to minimize it spinning later.

Can you get away w nylon locknuts if it's a minimal tack? It's not really holding much stress, just needs a drop on either side to keep it attached to the body.
I know nylon is kind of funny when it comes to Glass transition temperatures but doesn't really get soft until well over 100 c.

 

[Mac5005]

Just tack regular nuts ?

That nylock will be useless after the heat from the tacks.

If it needs to be reusable, use red loctite and let it cure from nut to stud with torque/double nuts then heat to remove.

 

[skyhighZJ]

Also, if it’s a “regularly” removed item the nylon is good for about 1.5 uses and then it doesn’t hold properly anymore regardless of heat or other outside influencers.

 

[hurt4x4]

Could possibly tack a stover nut on there and get it to work, but I agree red loctite would be the safest option.

 

[YotaOnRocks]

Cross threading is free loctite.

 

[jeepinmatt]

Tack em real quick and light. It’ll be fine. Give it time to cool between tacks.

 

[LT1JEEP]

Put 2 nuts on together and tighten them against each other and to can re-use over and over.

 

[jeepinmatt]

Or just tack the stud to the tray.

 

[mbalbritton]

Steel melts at around 2500F, nylon melts at around 500F.

What do you think?

Also, as mentioned, nylon in these nuts is good for a couple uses really. After that it’s worn out.

I’d find a different plan.

 

[Clubbs]

Phewy on science - tacking a locknut on is way more thought and planning than my rig will ever see. I'd say go for it - it's genius. Plus by time the heat has to transfer through the nut to the nylon its base temp will have cooled enough... not scientifically validated...

 

[YotaOnRocks]

Can you not use a nutsert?

 

[justjeepin86]

I agree with @jeepinmatt and @Clubbs that a quick tack will not affect the nylon. That being said, i would do something different.

 

[Jeff B]

The nylon will melt, unless you have your buddy there with a spray bottle ready to fast cool it.

2 jam nutz is the better option. Even better to put a nordlock between them.

All locking type nuts have a 2 to 3 use life span.

 

[RatLabGuy]

Steel melts at around 2500F, nylon melts at around 500F.

What do you think?

I think you are way overestimating the quality of welding I intend here.
When it comes to welding, the one thing I'm really good at is cold, unpenetrated joints.

 

[RatLabGuy]

I ended up deciding against this, not because it wouldn't work, but because i realized I had a two-nut-seperated-by-a-space problem that would never tighten against one another and I actually needed to still be able to turn that nut to tighten it together.

So I just double nutted it elsewhere (giggity)

But now you fawkers have me wondering if I coulda made it happen with a really quick, pourly penetrated tap.
Also - JB Weld would have been the answer.