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 6135-01-518-9813
NSN 6620-00-280-2874
NSN 5965-01-148-4979
NSN 5950-01-582-4738
NSN 6135-01-277-7907
NSN 5998-00-945-4925
NSN 6685-01-656-2776
NSN 6130-01-537-1127
NSN 5930-01-221-8631
NSN 5920-01-566-6982
NSN 5965-00-926-2591
NSN 6645-00-720-3953