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 5960-00-451-0572
NSN 5965-01-213-3989
NSN 5999-01-258-6187
NSN 5935-00-456-1779
NSN 5935-01-220-8104
NSN 5985-01-646-0137
NSN 6150-00-999-2317
NSN 6105-01-565-3557
NSN 5935-01-573-4211
NSN 5910-01-269-3986
NSN 5905-00-905-5813
NSN 5960-01-279-0985