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 5950-00-883-8958
NSN 6620-01-150-9400
NSN 5930-00-794-6728
NSN 6610-00-862-5901
NSN 5910-00-585-0361
NSN 6150-00-055-2994
NSN 6130-01-263-5724
NSN 5910-01-177-9504
NSN 6145-01-483-1905
NSN 5945-00-165-3878
NSN 6240-00-889-7349
NSN 5999-00-595-9342