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 6650-01-392-8086
NSN 5855-00-147-2508
NSN 5998-01-213-6505
NSN 5935-00-427-4414
NSN 5960-01-066-4771
NSN 5999-01-026-6033
NSN 5975-01-360-4324
NSN 5920-00-246-5992
NSN 6135-01-465-0829
NSN 6620-01-470-1058
NSN 6145-01-035-7527
NSN 5930-01-493-4231