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 5950-01-117-3567
NSN 5925-01-057-0417
NSN 6220-01-359-7418
NSN 5965-01-175-9133
NSN 6150-01-044-7832
NSN 6135-00-840-6451
NSN 5996-00-928-6096
NSN 5996-01-468-6073
NSN 5990-01-174-6851
NSN 5910-00-504-1029
NSN 6130-01-357-9165
NSN 5930-01-027-8501