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 5925-01-130-3573
NSN 7035-01-489-5384
NSN 5920-00-554-0437
NSN 6105-01-435-4376
NSN 5975-01-422-0784
NSN 5905-00-314-6963
NSN 5998-01-480-3694
NSN 6240-00-004-2516
NSN 5999-00-009-6659
NSN 5965-00-052-9184
NSN 6620-00-185-1671
NSN 6130-00-899-8448