1.000" outside diameter spiral ring style pins item is a cotter ring used on a clevis pin also known as a circle cotter; pits clevis pin dia 3/8 to 7/8; wire dia 1/16; od is 1 inch.
Used on mk123d0 ddg2317 and 2318 cabinet processor. 2a thread class right-hand 0.438" thread length flat chamfer head style 20 thread quantity per inch socket head shoulder screw unc thread series
Used on f-15sg aircraft. 3a thread class crowned hexagon head style 28 thread quantity per inch bolt, machine, crowned hexagon head, adjusting slotted shank cadmium surface treated unjf thread series
