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 5998-01-177-9340
NSN 5945-01-318-9398
NSN 6320-01-119-3935
NSN 6220-01-048-5584
NSN 5905-01-310-7629
NSN 6150-01-437-1588
NSN 5930-01-359-0146
NSN 5975-01-654-3150
NSN 5915-00-104-3119
NSN 6645-01-014-2849
NSN 5930-01-261-6790
NSN 5835-01-290-5925