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 6105-00-494-0846
NSN 5999-01-224-5090
NSN 2925-01-197-7864
NSN 6130-01-582-1790
NSN 5915-00-813-5734
NSN 4140-00-012-3506
NSN 5990-00-912-2193
NSN 5998-01-119-1548
NSN 6240-00-269-3346
NSN 5985-01-011-7406
NSN 5998-00-945-0407
NSN 6685-01-298-0531