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 5935-01-433-7819
NSN 5905-01-378-5272
NSN 5998-00-110-3395
NSN 5915-01-161-5847
NSN 2925-01-408-6205
NSN 5930-01-529-0365
NSN 7035-01-338-9971
NSN 5960-01-453-0999
NSN 6110-01-364-3273
NSN 6145-01-629-8498
NSN 6145-01-468-5467
NSN 5960-01-613-7945