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 5998-01-352-7293
NSN 6645-01-370-4259
NSN 5950-00-600-2830
NSN 6645-00-163-4624
NSN 5965-01-504-2340
NSN 4140-00-868-8907
NSN 2925-00-891-9289
NSN 6135-01-360-1620
NSN 2925-00-088-6790
NSN 6650-01-171-2838
NSN 6110-00-150-7844
NSN 5920-01-004-2602