Bolt for Rear Flex hose
 

Does anyone have an example of the bolt that holds the rear flex hose onto the rear end? This is for my 70 GTO with the 12 bolt axle. I have the mounting bracket but I can't find the bolt. I got what was supposed to be the right one from Inline Tube but it does not fit through the hose. Any help would be appreciated. Thanks.

My '71 had a 5/16 x 1 with a small (same dia as bolt head) washer.