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 5935-01-143-1786
NSN 5990-00-949-0166
NSN 5998-00-848-9137
NSN 6610-01-160-8815
NSN 5965-00-999-4334
NSN 5930-00-962-5762
NSN 6110-01-355-4536
NSN 6620-01-633-8443
NSN 5905-01-167-8647
NSN 5930-00-932-3143
NSN 6110-00-018-7046
NSN 6320-00-322-3460