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 5975-01-076-3656
NSN 5945-00-725-2913
NSN 5996-01-244-3450
NSN 5960-01-553-4557
NSN 5910-00-595-8040
NSN 5835-00-827-1904
NSN 6220-01-134-7078
NSN 6320-01-406-8942
NSN 6150-01-207-0144
NSN 6110-01-036-1628
NSN 6130-00-497-4789
NSN 5960-01-425-1454