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 6320-01-434-3049
NSN 6150-01-144-2996
NSN 5930-00-424-2664
NSN 6105-01-274-2719
NSN 6685-00-240-4177
NSN 5855-01-535-6275
NSN 6110-01-013-9313
NSN 6220-01-408-1717
NSN 6105-00-878-9445
NSN 6150-00-596-9882
NSN 5905-00-882-2213
NSN 6130-01-446-7404