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 5930-01-514-3696
NSN 5835-01-384-3206
NSN 6110-00-900-3970
NSN 6130-00-439-5080
NSN 5895-00-938-8473
NSN 5905-00-044-3842
NSN 5920-00-561-1309
NSN 5905-01-411-6204
NSN 6320-01-643-0850
NSN 6320-01-659-2819
NSN 5905-00-526-0753
NSN 5930-01-139-5153