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 6320-01-116-3980
NSN 6130-01-332-4952
NSN 5960-00-831-8683
NSN 5835-01-442-6482
NSN 6620-01-165-3784
NSN 6130-00-591-7988
NSN 5925-01-536-0738
NSN 5925-00-900-0675
NSN 5855-01-557-1798
NSN 5990-01-553-1094
NSN 5990-01-193-0487
NSN 6650-00-123-9677