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 6220-01-199-4511
NSN 5950-00-390-1074
NSN 5998-01-018-6990
NSN 6130-00-626-0082
NSN 5915-00-170-6775
NSN 5960-01-497-4572
NSN 5998-00-755-1528
NSN 5905-00-342-4485
NSN 5935-01-391-6288
NSN 6320-00-394-8458
NSN 5985-00-419-0342
NSN 5999-01-285-9436