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 5895-01-542-5206
NSN 5990-01-419-0661
NSN 5996-01-633-7979
NSN 4140-00-826-9031
NSN 6130-00-925-2303
NSN 5930-01-418-0835
NSN 5990-00-112-2440
NSN 6650-00-779-7294
NSN 6645-00-268-4042
NSN 6610-01-597-2911
NSN 2925-01-273-4898
NSN 6110-00-789-5594