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 6620-01-407-1158
NSN 5975-01-207-0508
NSN 5935-01-036-1926
NSN 7035-00-495-2137
NSN 2925-01-422-1542
NSN 6645-01-559-8314
NSN 6650-00-316-0260
NSN 5835-01-096-8570
NSN 5999-01-303-6569
NSN 5996-01-279-5462
NSN 6105-01-273-0212
NSN 6685-00-944-8920