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 5915-01-067-2301
NSN 5945-01-481-7084
NSN 6320-01-631-7828
NSN 6685-01-486-0905
NSN 4140-01-341-6024
NSN 6135-01-595-4779
NSN 6645-00-350-8070
NSN 5975-01-045-7623
NSN 5999-01-025-9717
NSN 6610-01-413-3912
NSN 5935-00-224-4866
NSN 6150-01-346-5705