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 5985-01-181-3129
NSN 6240-01-347-5476
NSN 6105-01-265-0553
NSN 6150-01-113-6853
NSN 6650-01-320-0529
NSN 5835-00-880-6477
NSN 6150-01-575-0153
NSN 6650-01-382-8569
NSN 5910-00-863-1830
NSN 6105-01-436-6970
NSN 5930-01-081-5932
NSN 5895-01-541-4367