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 5996-01-023-8370
NSN 5905-00-438-1186
NSN 5930-01-619-4087
NSN 6220-01-163-6380
NSN 4140-01-406-3626
NSN 5975-01-459-4217
NSN 6645-01-444-3016
NSN 6650-01-374-2766
NSN 6150-00-554-7591
NSN 6685-00-554-3825
NSN 7035-01-094-2365
NSN 6240-00-952-9561