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 5950-01-178-5239
NSN 5998-01-592-2771
NSN 5985-01-448-9550
NSN 5985-01-639-8150
NSN 6110-01-381-1269
NSN 5945-01-529-6523
NSN 6645-00-963-6354
NSN 5975-01-429-8609
NSN 6240-01-446-6315
NSN 5895-01-445-7893
NSN 5996-01-235-1643
NSN 6650-01-209-2409