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 6685-01-155-6563
NSN 7035-00-445-9657
NSN 5905-01-304-4326
NSN 6650-00-492-9503
NSN 5998-00-842-8132
NSN 5998-00-553-2849
NSN 6135-00-583-3966
NSN 6130-01-380-3183
NSN 5925-01-058-4664
NSN 6610-01-383-6982
NSN 6130-01-432-7890
NSN 5855-01-003-0848