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 5960-00-790-0509
NSN 5990-00-140-4559
NSN 5965-00-993-5439
NSN 5998-01-147-8911
NSN 5930-00-343-3743
NSN 5910-01-094-2188
NSN 6105-01-261-1641
NSN 5910-01-073-1342
NSN 2925-00-964-7128
NSN 6110-01-185-3858
NSN 6220-00-912-8959
NSN 5945-00-270-1474