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 5960-00-392-6291
NSN 5915-01-190-4978
NSN 7035-01-085-5955
NSN 6130-01-518-2007
NSN 6135-00-209-6918
NSN 6685-00-928-2241
NSN 5975-00-646-8887
NSN 5895-00-548-0124
NSN 5998-00-928-9291
NSN 6610-01-222-0582
NSN 5920-01-381-1306
NSN 5999-00-849-8714