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 5985-00-032-7023
NSN 6610-00-825-1564
NSN 5975-00-768-0306
NSN 6650-01-170-5440
NSN 5975-01-160-0481
NSN 5920-00-246-5992
NSN 5915-00-186-9346
NSN 6645-01-420-6804
NSN 5910-01-463-6664
NSN 5985-01-161-5823
NSN 5915-00-387-2333
NSN 5999-01-141-2082