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 6240-01-592-4068
NSN 5895-01-577-1259
NSN 7035-00-177-1557
NSN 2925-01-537-2069
NSN 6240-01-104-7066
NSN 5998-01-591-4586
NSN 5905-01-440-7672
NSN 5985-01-514-8314
NSN 6645-01-471-3578
NSN 5945-01-353-4352
NSN 5945-01-362-5670
NSN 5996-01-274-5513