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 5975-01-052-7661
NSN 5855-00-869-3635
NSN 5915-00-988-0014
NSN 5996-01-566-0344
NSN 5925-01-593-1220
NSN 7035-01-361-1311
NSN 6130-01-380-9799
NSN 6135-00-686-4777
NSN 5920-01-043-4848
NSN 6645-00-089-1942
NSN 5950-00-361-3036
NSN 6220-01-328-7523