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 5915-00-954-3747
NSN 5835-01-512-4834
NSN 2925-01-374-2402
NSN 6145-01-103-3273
NSN 2925-01-106-3552
NSN 5835-01-163-4215
NSN 4140-01-025-1555
NSN 6130-01-399-4349
NSN 5960-00-236-3980
NSN 5999-01-419-3501
NSN 5895-01-224-5857
NSN 5999-00-985-4946