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 5998-01-348-1289
NSN 6220-01-344-5014
NSN 6150-00-288-6245
NSN 6610-01-485-3074
NSN 6130-01-555-8361
NSN 6650-00-870-6281
NSN 6240-01-183-0893
NSN 6145-01-100-0732
NSN 5905-01-358-0285
NSN 5835-01-538-8080
NSN 5985-00-222-6420
NSN 5990-00-674-2318