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 5930-01-044-7561
NSN 6645-01-452-3354
NSN 6135-00-660-8654
NSN 5945-00-375-6647
NSN 5998-00-023-8968
NSN 5895-01-463-5760
NSN 5920-00-802-0666
NSN 5950-00-871-7791
NSN 5945-01-399-7647
NSN 6150-00-620-6012
NSN 6645-00-650-3405
NSN 5920-01-191-6321