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 4140-00-823-9194
NSN 5920-00-425-2878
NSN 5925-01-643-5706
NSN 7035-01-142-8036
NSN 6320-00-343-1798
NSN 5930-01-135-5558
NSN 5950-01-436-3297
NSN 5950-01-422-1253
NSN 6135-01-069-2482
NSN 5975-01-337-8790
NSN 5996-00-294-7045
NSN 6105-01-112-0742