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 2925-00-436-3527
NSN 6645-01-240-5499
NSN 5920-01-541-9562
NSN 5920-00-240-4129
NSN 5975-00-902-1420
NSN 6220-00-383-7354
NSN 6240-01-063-7685
NSN 5999-01-551-9031
NSN 6145-00-451-3534
NSN 6620-01-386-5914
NSN 6110-01-263-2271
NSN 5905-01-527-1372