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 6610-01-545-0766
NSN 5998-01-591-2293
NSN 6105-01-158-7618
NSN 6685-00-431-7755
NSN 6145-00-816-2005
NSN 5920-00-269-6178
NSN 5965-01-011-1228
NSN 5925-00-412-4155
NSN 5975-01-595-9998
NSN 6150-01-082-3942
NSN 5925-01-323-7756
NSN 5999-01-417-7701