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 5935-00-562-0006
NSN 5855-00-763-2155
NSN 6650-01-419-3793
NSN 5985-01-100-1821
NSN 5950-00-082-1616
NSN 5925-00-003-4722
NSN 6135-01-633-2066
NSN 5855-01-447-1071
NSN 5910-01-158-2962
NSN 5905-00-479-3998
NSN 6620-01-350-5103
NSN 6110-01-021-4070