safety wire the nuts, just they do on RACE cars

 

i would say tighten 2 nuts together and put in vice and drill, no need to waste $50 on a hunk of aluminum that will probally just get eaten up

 

Why not just use lock nuts instead of castle nuts?

 

make a small cut in the side of the stud with a thin metal dremel wheel so it doesnt walk off then drill it

 

I have to do this all the time for some of the sanitary parts we build that will be under high vibration, we do it on a mill but a drill press with a good vice will work fine. We simply throw a nut on the stud, pinch the nut in the vice and drill right through the nut and stud together. Simple as it gets :1

 

50 cents in lock washers = solved.

 

i've never trusted lock washers for ----. Do you really expect a little shitty spring to keep more tension than proper torque in the first place?

nylock are better than those split washers but none are positive lock.

 

+1 make sure you use a punch to indent a spot so the drillbit doesn't walk out and drill crooked through the stud

 

If you buy the right kind and size of lock washer, yes. In return do you really thing a castle nut which will have play in its tightness which usually would be prepaired beforehand will hold the initial wanted torque settings itself. No. A castle nut will not do so, it will simply not back all the way off the stud.

 

put the stud in the vice, use soft jaws or a wood shim or something

Take a ***** punch punch the location of the hole, then hit it with a center punch

put that bitch in the drill press, and drill away.