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 6150-01-591-9945
NSN 6645-01-423-9361
NSN 5925-01-364-9184
NSN 5996-01-044-1376
NSN 5895-00-487-5750
NSN 5990-00-518-0684
NSN 6130-01-375-4453
NSN 5895-01-220-4000
NSN 5945-01-362-9696
NSN 5895-01-228-0453
NSN 6610-01-434-4958
NSN 5999-01-575-1292