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 6135-01-390-7364
NSN 5895-01-119-3942
NSN 6240-00-468-7089
NSN 5935-01-432-1733
NSN 6145-01-473-7456
NSN 5855-01-175-3990
NSN 5910-00-484-0498
NSN 6650-01-309-9152
NSN 5925-00-465-4534
NSN 5925-00-592-8571
NSN 5998-01-278-7248
NSN 5925-01-656-8490