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 6220-00-944-4512
NSN 6220-00-215-0170
NSN 6105-01-258-9231
NSN 6135-00-756-6149
NSN 5985-01-520-4251
NSN 6650-00-336-0753
NSN 6130-01-556-0528
NSN 6650-01-646-1643
NSN 6220-00-320-7408
NSN 5945-01-585-3705
NSN 5935-01-142-5036
NSN 5960-01-406-4136