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 5999-01-150-2656
NSN 6320-01-470-6826
NSN 5950-00-203-5809
NSN 5930-01-099-6402
NSN 2925-01-467-7672
NSN 5998-00-492-9675
NSN 5925-01-527-6916
NSN 5960-01-067-9531
NSN 5935-01-185-1469
NSN 5965-01-617-7703
NSN 5935-01-337-5860
NSN 5920-01-189-3909