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 7035-00-623-4744
NSN 6135-00-377-9165
NSN 5935-00-155-4662
NSN 5935-01-573-4939
NSN 5965-00-492-9642
NSN 5915-00-781-3019
NSN 5895-01-524-4811
NSN 6620-00-269-8950
NSN 5935-01-428-9416
NSN 5905-01-592-2456
NSN 6220-00-233-7436
NSN 5835-01-063-6284