Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
Sorry 5/16" x 18 tpi x 1" get two washers also.
On the inside of the bracket you should be able to see the spot welds, flip it over and drill out the spot welds. A dremel with a grinding wheel will help smooth everything out.
Wow, I thought the 5/16 bolts were on the Sportster only and 3/8 on the Dyna..