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 5835-00-450-6763
NSN 5920-00-291-1379
NSN 6150-00-205-2490
NSN 6610-00-133-7868
NSN 5905-01-580-1034
NSN 6685-01-487-7389
NSN 5996-00-947-0804
NSN 4140-01-425-1725
NSN 5985-01-436-5331
NSN 5996-01-198-7707
NSN 6135-01-052-9634
NSN 6220-01-101-2324