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 5930-00-146-3626
NSN 5985-01-507-3668
NSN 5990-00-969-8838
NSN 6130-01-192-7268
NSN 6240-00-985-5244
NSN 5905-00-638-6776
NSN 5920-00-325-3980
NSN 5975-01-430-2459
NSN 5965-01-178-2367
NSN 5895-00-939-3765
NSN 5975-00-488-8691
NSN 5965-01-005-0341