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 5996-01-331-6875
NSN 6135-00-767-0331
NSN 5925-01-332-6524
NSN 5930-00-081-3818
NSN 5998-01-244-3902
NSN 6110-01-037-2163
NSN 6620-00-684-6771
NSN 6220-00-252-8025
NSN 6130-01-004-0102
NSN 7035-01-553-5036
NSN 6135-00-753-2276
NSN 5960-00-274-4188