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 6645-01-463-3024
NSN 5855-01-477-5332
NSN 2925-01-054-3190
NSN 6130-01-554-3629
NSN 5855-01-397-2487
NSN 5905-00-597-6081
NSN 5920-00-918-1585
NSN 5999-00-596-8745
NSN 6320-01-659-2819
NSN 2925-00-240-7820
NSN 2925-01-175-1217
NSN 5910-01-357-8051