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 6105-01-255-4028
NSN 5975-01-291-4095
NSN 5905-00-323-1272
NSN 5905-00-082-1927
NSN 5965-01-100-2591
NSN 5930-01-160-7895
NSN 5945-00-826-6640
NSN 6150-01-270-2268
NSN 6650-00-320-8683
NSN 5950-00-201-1196
NSN 6685-00-023-5933
NSN 5950-01-212-2838