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 5985-01-480-0970
NSN 6620-01-280-3516
NSN 6620-01-323-5275
NSN 7035-00-517-8232
NSN 5835-00-830-6416
NSN 6135-01-589-9467
NSN 6130-01-660-3939
NSN 5965-01-566-9024
NSN 5920-01-500-8005
NSN 6110-00-652-6540
NSN 6685-00-001-2103
NSN 5930-01-093-0630