Underride traction bar mountint nut size?

[cboss70]

Ok I know this is a stretch but would anyone happen to know what thread and nut size is used to hold the under-ride traction bar onto the stud mounted to the frame rail near the front part of the leaf spring? My bars were off the car and I don't believe I have the frame rail mounting stud nuts so I wanted to buy generic replacements until I can see what originals look like and maybe go down that path.

[jk66gt350]

The diameter of my underride mount nuts is 15/16 ths.  Not sure of the thread.  I believe mine are original, but as third owner, I cannot be certain.

[bobtail]

believe the 15/16 size is correct, they are half nuts with something like triangles stamped into the nuts to make them lock nuts, I think they are fine threads, don't think you will be able to duplicate, probably will have to find some originals

[J_Speegle]

Can't remember if I've posted this picture before on this site so here are some pictures of examples

[Bob Gaines]

To add, the nuts were zinc silver.

[S7MS427]

Traction Master should be able to answer your question (http://www.tractionmaster.com/). (818) 565-1121.

[Brant]

I bit late here, but they should be the same as the rear bolt size, which is 5/8-18. Rear bolt is 2 3/4 inches long also. I would have to look at a car to see if the length on the front bolt is the same.

[Bob Gaines]

I bit late here, but they should be the same as the rear bolt size, which is 5/8-18. Rear bolt is 2 3/4 inches long also. I would have to look at a car to see if the length on the front bolt is the same.

The front bolt that is welded to the bracket and also holds the spacer washers is much longer at 3 1/2.

[cboss70]

Thank you all- I used the pictures and shockingly was able to locate the original nuts!