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 6240-01-501-5688
NSN 5905-01-152-2580
NSN 6110-01-085-4218
NSN 5965-01-510-3456
NSN 6650-00-614-1711
NSN 6610-01-175-5920
NSN 2925-01-328-4394
NSN 5835-01-178-4154
NSN 5999-01-313-5139
NSN 5975-01-084-0919
NSN 6150-00-696-4295
NSN 5975-00-028-0122