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 5835-01-332-2867
NSN 6610-01-542-9725
NSN 5999-01-484-8054
NSN 6135-01-612-5578
NSN 6145-01-212-3528
NSN 6320-01-406-6098
NSN 6150-01-563-7244
NSN 6240-00-391-6402
NSN 6105-01-226-4198
NSN 2925-01-642-3255
NSN 6610-00-925-5064
NSN 5999-01-424-0713