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 2925-01-442-7812
NSN 5920-01-081-1267
NSN 2925-01-141-7563
NSN 6645-00-148-1798
NSN 5895-01-609-8688
NSN 6105-01-503-2576
NSN 5965-00-372-2537
NSN 5920-01-385-4413
NSN 5930-01-347-0307
NSN 6645-00-086-9346
NSN 5990-01-210-5474
NSN 5910-00-619-7849