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 7035-01-421-7159
NSN 5998-01-420-6620
NSN 5935-00-739-6895
NSN 5996-00-965-5261
NSN 6650-00-170-5095
NSN 5965-00-464-6191
NSN 5990-01-060-3687
NSN 5945-00-888-3710
NSN 6110-01-014-3840
NSN 5998-01-618-0397
NSN 5945-01-461-2401
NSN 5905-00-707-3109