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 5960-00-060-1397
NSN 4140-01-418-9453
NSN 6610-00-377-7956
NSN 4140-01-029-2814
NSN 6150-01-420-2876
NSN 2925-01-497-9381
NSN 6620-01-348-1893
NSN 5998-01-590-9104
NSN 5950-00-246-2561
NSN 6320-00-521-9350
NSN 5920-01-429-9059
NSN 5905-01-393-4720