58 seat bolts

[digger]

Hi, can anyone tell me if the seat bolts in my 58 Biscayne are just a 5/16 fine thread or something else? The bolts are missing. Thanks

 

[Dicey58]

Digger, I just pulled the seats out of my '58 Impala for restoration purposes. They were not the originals, but they were 5/16 fine thread with a 1/2 hex head, and worked perfectly.