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 5895-00-448-4059
NSN 5990-01-384-9747
NSN 5985-01-259-4314
NSN 6145-01-512-5885
NSN 7035-01-222-0729
NSN 5920-01-576-9869
NSN 5990-01-078-1294
NSN 6610-00-627-7406
NSN 5965-01-647-8196
NSN 5895-00-270-6595
NSN 5975-01-471-8939
NSN 6105-00-043-3374