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 6135-00-819-8074
NSN 6645-01-632-2272
NSN 6240-01-063-7685
NSN 6145-01-436-0826
NSN 6105-01-278-6517
NSN 6130-01-450-2776
NSN 5895-01-513-2184
NSN 5895-01-321-9235
NSN 2925-01-416-6927
NSN 5935-01-207-9571
NSN 6240-01-175-2919
NSN 5998-01-463-2431