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 5915-00-908-2018
NSN 6110-00-186-2542
NSN 5975-01-249-5920
NSN 5855-00-688-9954
NSN 5930-01-518-6878
NSN 5915-00-960-4786
NSN 5935-01-406-3323
NSN 6620-00-286-5721
NSN 6645-00-925-3857
NSN 5935-01-371-3131
NSN 5965-01-205-6249
NSN 5945-01-624-4922