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 5915-00-067-8773
NSN 5950-00-229-3979
NSN 5835-00-136-2322
NSN 6110-01-322-8514
NSN 5905-01-590-5746
NSN 5960-01-307-2674
NSN 5998-01-625-2376
NSN 6150-00-279-9337
NSN 5965-01-569-6704
NSN 2925-01-120-8712
NSN 6220-01-559-8839
NSN 5998-01-251-8732