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 6240-00-635-9953
NSN 5905-01-505-3860
NSN 6610-00-935-7131
NSN 6135-00-100-8890
NSN 6135-01-518-9813
NSN 5998-01-137-5438
NSN 4140-01-494-9843
NSN 6135-01-062-9356
NSN 5905-00-080-5937
NSN 5996-00-191-0396
NSN 5915-00-847-7890
NSN 5935-00-289-3903