Bolt size for the Center Rear Axle Bumper

[MustangGT 11]

Anyone have their bumper off the car (or an old one laying around) and the bolts close by? I need to know the size of the bolts that hold it in. I picked up a new one for my rebuild - but the old one is lost somewhere in the garage along with the bolts.

 

I bet I put it in a little baggy and "stored" it somewhere so I wouldn't lose it - so much for that plan.

 

I am talking about the rubber bumper that bolts to the underside just above the rear end. It is held in with two bolts -- I tried several of my 'spares' bolts and no luck.

[dennyb68 11]

I checked mine and its a 5/16 fine thread self tapper. I have some new spare bolts I can drop off tomorrow to see if they will work.