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 6150-00-170-8008
NSN 6105-01-263-3989
NSN 7035-01-578-6909
NSN 5965-01-382-9081
NSN 6150-01-414-6874
NSN 5895-01-315-4082
NSN 5905-01-282-3105
NSN 5925-01-363-1365
NSN 6240-01-072-1097
NSN 5835-00-180-7555
NSN 5960-00-811-6570
NSN 5895-00-163-3038