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 5915-00-711-9829
NSN 5855-01-653-9463
NSN 5945-01-063-5328
NSN 5855-01-462-0495
NSN 6130-01-258-1134
NSN 6130-01-561-0484
NSN 6645-00-551-8291
NSN 5895-01-555-4223
NSN 5835-00-236-8760
NSN 6110-00-770-5845
NSN 2925-01-642-3255
NSN 6240-01-094-6262