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 6240-00-560-5426
NSN 5920-00-125-1316
NSN 5930-01-440-2646
NSN 5996-00-156-5967
NSN 4140-01-087-3336
NSN 5985-01-480-2392
NSN 5935-00-783-5493
NSN 5990-00-625-2560
NSN 6220-00-949-8316
NSN 6650-01-602-7567
NSN 5855-01-201-4857
NSN 5905-01-457-1761