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 6610-00-466-3104
NSN 5930-01-578-8197
NSN 4140-00-283-6843
NSN 5960-00-911-3422
NSN 6620-00-267-5273
NSN 6110-01-442-6665
NSN 5945-01-359-3028
NSN 6145-01-355-6584
NSN 5835-00-422-1441
NSN 6610-00-092-8776
NSN 5975-01-525-9413
NSN 5975-01-183-1326