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 6620-00-828-3842
NSN 5960-01-350-4288
NSN 5905-01-535-5918
NSN 5950-00-233-4754
NSN 6135-00-725-9369
NSN 5998-01-290-3913
NSN 5935-01-399-0289
NSN 5965-01-005-0341
NSN 7035-00-167-7411
NSN 5835-01-186-4961
NSN 5925-00-061-8708
NSN 6110-00-104-8009