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 6645-01-447-6777
NSN 6135-01-633-8502
NSN 6130-01-550-6385
NSN 6145-01-218-6029
NSN 5905-00-203-5400
NSN 5930-01-169-6606
NSN 5915-00-516-9987
NSN 6650-01-396-0767
NSN 6110-01-225-0104
NSN 5910-01-322-5964
NSN 6105-00-955-1129
NSN 5985-00-081-3456