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 5945-01-559-8257
NSN 5960-00-719-0125
NSN 7035-01-633-9537
NSN 5855-01-110-9564
NSN 6645-00-248-5434
NSN 5895-01-294-1482
NSN 6320-01-021-6633
NSN 5960-00-199-6034
NSN 5965-01-101-9094
NSN 5835-01-482-1591
NSN 5895-00-711-0628
NSN 6130-00-285-8119