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 5945-01-250-2518
NSN 6110-01-432-0474
NSN 5998-01-422-5053
NSN 5975-01-301-2198
NSN 6135-00-209-6918
NSN 5999-00-104-5582
NSN 6240-01-063-7685
NSN 5950-01-503-3625
NSN 6645-00-171-9639
NSN 5930-01-579-0144
NSN 6620-01-398-8986
NSN 5925-00-760-2622