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 6645-00-806-6961
NSN 5960-00-262-1942
NSN 5925-01-554-0806
NSN 5925-01-065-4091
NSN 6105-01-369-8686
NSN 5915-01-258-6880
NSN 5950-01-183-9563
NSN 2925-01-494-3259
NSN 5999-00-239-9617
NSN 5999-01-122-0301
NSN 6130-01-514-1027
NSN 5925-00-970-7364