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 7035-00-320-5644
NSN 5920-01-392-1095
NSN 5950-01-434-6295
NSN 6110-01-084-4215
NSN 5835-01-632-6627
NSN 5960-01-344-2604
NSN 5960-01-658-9538
NSN 5998-01-023-2949
NSN 6650-01-421-6957
NSN 6685-00-355-1605
NSN 5996-01-601-5113
NSN 6145-01-183-4137