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 5905-01-089-7897
NSN 5835-00-491-3834
NSN 5925-01-174-8776
NSN 5895-01-517-8429
NSN 2925-00-611-6711
NSN 6240-01-462-1596
NSN 5905-01-648-1888
NSN 6240-01-032-4624
NSN 5905-00-290-8098
NSN 2925-01-361-5310
NSN 6685-01-320-3344
NSN 6240-01-160-7934