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 6650-00-027-2608
NSN 5935-01-151-5144
NSN 5935-00-107-0741
NSN 6110-01-633-9660
NSN 5915-01-335-0187
NSN 5996-01-541-4974
NSN 4140-00-411-6848
NSN 5855-01-222-1242
NSN 5945-01-568-4587
NSN 5855-00-560-0110
NSN 6650-01-572-2639
NSN 6105-00-377-8206