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 5835-01-185-1102
NSN 6620-00-899-0971
NSN 7035-00-193-2269
NSN 5930-01-285-9491
NSN 5996-01-075-5184
NSN 5910-00-823-9414
NSN 7035-00-574-4223
NSN 5935-00-584-4047
NSN 6145-01-131-8557
NSN 5895-01-144-0871
NSN 6145-01-377-5130
NSN 4140-00-456-0902