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 6610-01-633-8931
NSN 6610-00-821-1356
NSN 5930-01-213-2751
NSN 6110-01-317-7867
NSN 5930-00-978-4799
NSN 6110-01-535-0167
NSN 6610-01-469-8904
NSN 5905-01-340-2472
NSN 5950-00-269-2698
NSN 5895-00-943-3552
NSN 6130-00-264-0358
NSN 6650-01-388-4363