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 5985-01-179-2771
NSN 5996-01-219-6675
NSN 6240-00-062-3642
NSN 5996-01-524-3052
NSN 5905-01-213-2821
NSN 6620-00-549-5644
NSN 6105-01-329-1769
NSN 5855-00-494-9581
NSN 6145-00-695-9568
NSN 6650-01-384-0529
NSN 6150-00-914-1018
NSN 5996-01-451-8141