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 5960-00-996-0681
NSN 6110-01-434-1486
NSN 5975-01-009-3723
NSN 6650-00-090-5320
NSN 5960-00-581-8458
NSN 6610-01-044-4740
NSN 5920-01-245-8510
NSN 2925-01-290-8208
NSN 6320-00-228-5678
NSN 5930-00-246-5046
NSN 5965-00-296-9994
NSN 5915-01-633-9845