Some items from this specific schematic: Washer(19.5x32x2), Cushion, Washer(16x22x1), Retainer,snap.
twelve components are shown in this M31 1968 Usa (e03) Rear Swinging Arm-rear Shock Absorber exploded diagram.
This Cap(od:40) is the most expensive of the items that make up this Rear Swinging Arm-rear Shock Absorber assembly.