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 5999-01-472-2536
NSN 5920-00-734-5519
NSN 5930-00-478-3381
NSN 7035-00-349-8571
NSN 4140-00-376-5712
NSN 6240-00-904-6650
NSN 6685-00-010-3053
NSN 5996-00-553-7348
NSN 6240-01-571-7476
NSN 7035-00-076-4097
NSN 5965-01-091-1884
NSN 5935-01-618-9678