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 6145-01-461-2750
NSN 5895-00-995-9430
NSN 5930-00-601-6622
NSN 6650-00-175-1342
NSN 4140-01-531-1617
NSN 5925-01-076-1429
NSN 5998-01-480-8500
NSN 6110-00-866-8590
NSN 6130-01-029-6112
NSN 5965-01-350-1890
NSN 6135-00-635-9187
NSN 5895-01-297-0956