A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5935-01-462-7343
NSN 5855-01-608-7462
NSN 6110-00-104-8009
NSN 6645-00-155-2398
NSN 5996-01-459-3036
NSN 5905-00-272-7130
NSN 6105-01-314-1265
NSN 2925-01-099-7075
NSN 7035-00-890-7649
NSN 2925-00-800-4685
NSN 5910-01-144-5605
NSN 6650-00-957-9985