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 5999-01-506-2881
NSN 5998-01-420-2632
NSN 6650-00-069-3107
NSN 5996-00-819-4579
NSN 5998-00-593-3154
NSN 5990-00-717-5648
NSN 6110-01-313-7147
NSN 5975-01-406-3162
NSN 5835-01-080-3678
NSN 5990-01-218-5160
NSN 5975-00-214-0511
NSN 5915-00-900-6391