Part Found / WTB - 73 Challenger Battery Hold Down Nut

[Gripper]

Part Found / In search of the nut that mounts in the inner fender well square hole that the battery hold down 5/16 bolt screws into.
Anyone have 1 to sell or direct me to a vendor that has them.
Attached picture of hole and 5/16 bolt.

Thanks Gripper 

[Yeya93]

could you not use a rivnut in that hole?

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[jimynick]

Without looking at mine- isn't it just a 5/16" J-bolt? If it is, you could go to most any bodyshop and get one. If you have no luck there, PM me and I'll dig in my spare bolts box. Good luck 

[Mr Cuda]

That position uses a swedge nut. Square nut with parts of the inner panel pressed into grooves on the nut.
It might be hard to reinstall properly, with everything painted.
When you find one, you might have to bond one on from the backside. It looks like the hole has pulled part of the inner fender with the nut.
It is common in other spots on cars,  i might have a couple in a bucket

[Gripper]

Thanks for the replies.
This is the 1st picture I have seen with correct nut installed.

Mr Cuda if you can find one can you measure it for size, the square hole I have measures 9/16 both ways, let me know if you think it could be secured with panel bond or need to be welded in because of metal being torn.
If anyone else happens to have one let me know.
I would pay for the part and shipping.

Thanks Gripper

[71vert340]

 If you are not worried about originality, I would just purchase a new steel square nut and weld it to a piece of sheet metal or a washer larger than the torn hole by 1/2" and panel bond it to the bottom of the torn hole. That way, it won't burn the paint like welding would. Just an idea for an easy repair. You can find square nuts at the hardware store or on line.
Terry W.

[gzig5]

Another method to consider is to make a "T" nut that will protrude up into the square hole and then epoxy it in from underneath.  You file/cut a piece of steel to the same width of the square hole on one side but 1/8" longer on the other.  Then file a .020"-.040" deep step (or just slightly less than thickness of the sheet metal) in on each end of the long axis so it will go up in the hole, but won't turn when the bolt is tightened.  Could weld it in but the epoxy keeps you from burning the paint.  If you are worried about it pulling through, make it wider and file the step on all sides.  Easy for me to do with a milling machine but more work involved by hand.