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 6105-01-254-2722
NSN 5999-00-248-7240
NSN 5895-01-394-5469
NSN 5965-00-177-2932
NSN 5915-01-029-4128
NSN 5998-01-426-4521
NSN 6685-00-734-0131
NSN 5960-00-897-2124
NSN 5999-01-512-7075
NSN 6130-01-444-9586
NSN 5945-00-316-5300
NSN 6650-01-459-3946