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 5925-01-247-5315
NSN 5895-01-198-2228
NSN 5855-01-519-2486
NSN 5945-01-380-7780
NSN 5999-01-365-0766
NSN 5895-00-301-4871
NSN 2925-01-157-9204
NSN 5895-00-456-0830
NSN 5998-01-381-1330
NSN 6105-01-252-8847
NSN 5920-01-494-4117
NSN 6105-01-634-0322