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 5915-01-488-6624
NSN 5935-01-571-0636
NSN 5935-01-104-4740
NSN 5965-01-449-1855
NSN 5930-00-177-9383
NSN 6320-01-381-7023
NSN 6240-01-584-6450
NSN 6320-00-456-0836
NSN 6130-01-502-7689
NSN 6240-01-225-4671
NSN 6145-00-909-0614
NSN 5965-01-659-9477