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 6220-01-645-5767
NSN 6610-01-502-7106
NSN 6220-01-408-6890
NSN 5999-01-423-0550
NSN 6650-00-210-4399
NSN 5920-01-178-5167
NSN 5999-01-642-9391
NSN 5925-01-128-6694
NSN 6610-00-474-5622
NSN 5998-01-422-9968
NSN 2925-01-418-3296
NSN 5960-00-691-1375