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 6110-01-496-6975
NSN 5920-01-010-3293
NSN 5960-01-318-6557
NSN 6145-01-570-2597
NSN 6145-00-232-0813
NSN 5915-00-590-4254
NSN 6105-01-557-8315
NSN 6650-00-177-6390
NSN 6610-00-343-5631
NSN 5996-01-155-5678
NSN 2925-01-538-1343
NSN 7035-01-028-4966