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 5945-01-459-7326
NSN 5935-01-209-2982
NSN 5925-01-544-4287
NSN 5915-00-726-6218
NSN 6145-01-370-4485
NSN 4140-00-643-3744
NSN 5950-00-296-5505
NSN 5965-01-605-1753
NSN 5998-00-852-2873
NSN 5935-01-347-8504
NSN 5925-00-035-8469
NSN 6240-01-103-9554