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 5960-00-786-7967
NSN 5855-01-575-3154
NSN 5835-01-396-0640
NSN 7035-01-134-7080
NSN 6105-00-614-8003
NSN 6135-01-120-9812
NSN 5910-01-178-2548
NSN 5910-01-568-2173
NSN 6105-01-123-7017
NSN 6320-01-576-6310
NSN 5996-01-337-6190
NSN 6145-01-301-6015