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 5965-01-503-7834
NSN 5910-00-908-3061
NSN 6150-01-048-0629
NSN 5920-01-512-9897
NSN 6220-00-903-6647
NSN 5975-00-204-9190
NSN 6620-00-724-3137
NSN 5975-01-513-6736
NSN 5920-00-356-2103
NSN 5910-00-964-7279
NSN 5960-00-059-7010
NSN 5930-01-202-3073