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 6240-01-442-7746
NSN 6135-01-307-6006
NSN 5920-00-245-6434
NSN 6220-01-459-5697
NSN 6650-00-004-3683
NSN 5910-01-199-0256
NSN 5945-00-762-0489
NSN 6145-01-254-2935
NSN 6110-01-217-1007
NSN 5835-01-104-5707
NSN 5950-01-453-7312
NSN 5945-00-233-5804