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 6135-01-041-3829
NSN 5945-01-396-9066
NSN 5998-01-578-6316
NSN 6620-00-322-2832
NSN 5999-01-432-2147
NSN 5895-00-519-0202
NSN 5965-00-240-3819
NSN 5998-00-141-9872
NSN 5945-01-069-2998
NSN 6220-01-562-3819
NSN 5925-01-574-2048
NSN 5996-01-282-4268