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 5996-01-237-1615
NSN 5915-01-205-2933
NSN 5930-01-388-5320
NSN 2925-01-398-6751
NSN 5930-00-733-3736
NSN 6150-01-049-3437
NSN 5895-00-060-8987
NSN 5895-00-189-8095
NSN 5915-00-907-3250
NSN 6645-00-599-8890
NSN 6645-00-445-8143
NSN 6135-00-485-7402