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 5999-01-061-0501
NSN 6220-00-112-2182
NSN 6130-00-381-1927
NSN 6130-01-332-6082
NSN 5965-01-055-0102
NSN 5935-00-233-7159
NSN 5990-01-104-6703
NSN 5905-01-450-4560
NSN 6110-00-231-9493
NSN 6685-01-242-3415
NSN 6685-00-451-6941
NSN 5999-01-027-8721