Used on fuel electronics assy, rmv. 0.508" hole diameter 0.688" outside diameter nylon shoulder washer natural color is off-white length is .079 shouldered
Used on f-22 raptor. 0.800 round od with rectangular shape shoulder with center hole 0.530 x 0.380; 0.060 washer thickness with 0.070 thick shoulder; material is polyetherimide molding resin