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 6135-01-349-6285
NSN 6650-01-392-8086
NSN 6135-00-947-0406
NSN 5996-01-505-0101
NSN 6110-01-339-5243
NSN 5855-01-525-8017
NSN 6150-01-508-4207
NSN 5925-00-544-5980
NSN 6240-01-042-3650
NSN 6220-00-390-1170
NSN 5996-01-467-0336
NSN 5998-01-157-9919