57084-S Attaching bolt with 7/16" hex head and captured washer. Among other things, it is used to attach the door run, window stops (all 3), both window stabilizers, and the window regulator. Same bolts for manual and power window regulators. Bolt sold individually, there are a good handful in each door. This bolt is used for bolting in the bolt-in glass on 1970, lower "L" bracket for rear quarter windows on 1971-73 Cougar and Mustangs.