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 5945-00-826-2880
NSN 6150-01-448-0037
NSN 5920-01-194-9541
NSN 5920-00-962-2890
NSN 6135-00-488-4478
NSN 5895-01-634-0630
NSN 6650-00-434-0188
NSN 6135-01-222-0703
NSN 6320-01-021-6633
NSN 5985-01-598-9087
NSN 5920-01-089-6759
NSN 5925-01-393-1441