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 6220-00-871-5094
NSN 6150-01-100-4337
NSN 5835-00-198-4936
NSN 5950-00-768-9182
NSN 5930-00-266-8175
NSN 6650-00-399-2005
NSN 5930-01-614-9390
NSN 5965-01-194-3453
NSN 5950-01-474-5576
NSN 6130-00-683-1011
NSN 5945-01-072-4161
NSN 5920-00-372-5864