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 6645-01-480-0662
NSN 5945-01-596-9540
NSN 2925-00-017-0526
NSN 6240-01-466-9991
NSN 5975-01-633-3013
NSN 5895-01-482-0717
NSN 6645-01-350-3138
NSN 5895-01-064-8213
NSN 5945-01-031-3006
NSN 5996-00-756-6110
NSN 6645-00-542-1734
NSN 6135-00-643-4843