Spun a cab mounting nut

[Mattchu60]

Im looking for ideas on how to fix this. I the cab mounting caged nut break loose when removing the bolt. I was able to get the bolt out by using a hole saw to cut a hole above the nut so I could hold it still.

Now I need to fix it - figure my options are:

- 1) remove the caged nut and replace with a 1/2" nut welded to a piece of 1/4" steel plate.
- 2) leave the nut in place, wedge some steel plate between the crossmember wall and the nut to hold it in place.

Anyone done this before?

[old Rusty C10]

Ive used a lock washer regular washer and a nut with great success I also used a couple of zips to screw a cover over the hole saw hole in case I need to get into it again and it keeps dirt out

[Ziegelsteinfaust]

I would also consider a flanged nut as they give you more surface area to weld too.

Be sure to chase the threads afterwards as the can get galled up from welding.

[sweetk30]

if you have the hole now to get to the nut bend the tabs back tight and weld them together . the reason the nut spun was rust . clean the nuts threads with a tap and blow out . your good to go from there .

[Mattchu60]

Regarding the factory nut - are they lock nuts or normal nut. I would think a lock nut would be better since the bolts thread in from the bottom. If they are lock nuts then the tap would probably take out the "locking" feature.

[sweetk30]

i have pulled bolts from a super clean low mile 77 k30 and they had blue lock-tight on them .