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 5915-01-608-4505
NSN 5999-01-367-2019
NSN 5998-00-596-9568
NSN 5985-01-506-6091
NSN 6240-00-826-8426
NSN 5855-00-058-1293
NSN 6145-01-466-1420
NSN 6110-00-679-8961
NSN 6110-00-317-8063
NSN 6685-01-608-4348
NSN 5960-00-813-9012
NSN 5895-01-263-6747