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 5905-01-655-4872
NSN 4140-00-146-1633
NSN 5990-00-258-0228
NSN 5965-00-289-6280
NSN 6145-00-808-7847
NSN 5835-01-624-5666
NSN 5996-00-079-1268
NSN 5930-01-372-5389
NSN 5935-00-933-8537
NSN 6105-01-534-1903
NSN 5985-01-498-9476
NSN 6645-00-909-2143