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 6135-01-412-0404
NSN 5999-01-465-7057
NSN 5935-01-203-7837
NSN 5920-00-931-7979
NSN 5855-00-252-5743
NSN 6110-01-384-5242
NSN 5895-01-483-6392
NSN 5855-01-380-9950
NSN 5905-01-623-3375
NSN 5920-01-398-0580
NSN 5925-01-212-7249
NSN 5990-01-595-9441