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 5996-01-423-9423
NSN 6650-00-232-6390
NSN 5925-01-333-2419
NSN 5996-01-261-2303
NSN 5935-01-106-3535
NSN 6240-01-451-1409
NSN 6240-01-580-9691
NSN 6685-01-029-3416
NSN 4140-01-609-1489
NSN 6320-01-172-6103
NSN 5920-01-371-3112
NSN 6105-01-620-9398