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 6220-00-181-9698
NSN 5975-00-321-1146
NSN 6240-01-112-1120
NSN 5996-01-364-7934
NSN 5975-01-543-0196
NSN 6220-01-586-6322
NSN 6145-00-537-7059
NSN 5835-00-958-6231
NSN 5945-01-415-0858
NSN 5998-01-626-8105
NSN 5935-01-546-2857
NSN 5998-01-224-6642