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 6240-01-423-9738
NSN 6240-00-055-4372
NSN 6130-01-091-0959
NSN 6105-00-635-9718
NSN 5975-00-104-5399
NSN 6130-01-411-6674
NSN 5945-00-678-2859
NSN 6240-00-539-9770
NSN 5960-00-838-1360
NSN 6240-01-582-3790
NSN 5855-01-433-2220
NSN 5990-01-380-4884