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 5996-01-229-2469
NSN 6620-01-087-2354
NSN 6650-01-413-3825
NSN 5905-01-448-0448
NSN 6650-01-099-1422
NSN 5960-01-649-1341
NSN 5930-01-415-3905
NSN 5935-00-711-8274
NSN 6130-00-899-0485
NSN 7035-01-537-0033
NSN 5998-01-564-2705
NSN 6150-01-313-9832