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 5930-00-491-3902
NSN 6105-01-469-2207
NSN 5990-00-660-8608
NSN 5999-00-003-6423
NSN 5895-01-420-4989
NSN 6620-00-239-6153
NSN 5965-01-364-6834
NSN 6135-01-413-4747
NSN 5905-01-040-9887
NSN 6135-01-370-9440
NSN 6650-00-610-3956
NSN 5985-01-240-5388