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 5945-01-282-6900
NSN 5920-00-536-1842
NSN 5920-01-363-9397
NSN 6150-01-025-3696
NSN 7035-01-433-3547
NSN 5855-01-337-0245
NSN 5999-00-131-1330
NSN 5960-01-339-3037
NSN 5835-01-452-4947
NSN 5965-01-354-9834
NSN 6220-01-258-6217
NSN 6130-01-603-3452