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 6620-01-318-8314
NSN 5996-00-240-3224
NSN 6650-00-754-2276
NSN 5990-01-218-5160
NSN 6240-01-527-8319
NSN 5985-00-105-7686
NSN 6240-00-141-6143
NSN 5915-00-396-2263
NSN 6650-01-316-3274
NSN 6110-00-877-2940
NSN 5950-01-576-1313
NSN 6150-01-449-0398