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 5905-01-258-4952
NSN 5925-01-537-1140
NSN 5998-01-407-9142
NSN 5975-00-927-7476
NSN 5960-01-419-5421
NSN 5998-00-719-5040
NSN 6220-00-877-6376
NSN 6145-01-490-1944
NSN 6650-01-358-2827
NSN 5835-00-419-0575
NSN 6220-01-093-6723
NSN 5835-01-143-4985