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 5999-01-221-9175
NSN 5950-00-248-6921
NSN 6110-01-304-0208
NSN 6110-01-491-6704
NSN 5835-01-085-5487
NSN 6220-01-502-8991
NSN 2925-01-350-8372
NSN 5930-01-141-6200
NSN 6320-01-192-0332
NSN 5920-01-570-4920
NSN 5895-01-084-5386
NSN 6240-01-401-5340