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 6685-00-186-0190
NSN 5960-01-297-2665
NSN 6620-01-150-5072
NSN 6320-01-261-2848
NSN 5996-00-763-1239
NSN 5935-01-516-8809
NSN 6610-01-417-3011
NSN 6685-00-299-8496
NSN 6240-01-434-9656
NSN 5915-01-396-0095
NSN 5930-01-248-4548
NSN 6110-01-421-5959