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 5999-00-446-2708
NSN 5998-00-285-8613
NSN 5905-00-186-3494
NSN 4140-00-045-8117
NSN 5975-00-455-9388
NSN 6685-01-032-2259
NSN 5999-00-077-2793
NSN 5975-00-374-5245
NSN 6610-01-368-3269
NSN 5855-01-262-1766
NSN 6220-01-579-8402
NSN 6220-00-794-7834