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 6610-01-044-4740
NSN 5990-01-411-5930
NSN 5960-00-553-7338
NSN 5999-00-106-1528
NSN 5998-01-406-1814
NSN 6110-01-631-1368
NSN 5910-00-862-3552
NSN 5835-00-993-7957
NSN 6110-00-268-2919
NSN 6110-01-335-6174
NSN 5855-01-217-2353
NSN 5975-01-467-4915