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 5935-01-143-3398
NSN 5965-00-735-9315
NSN 5925-01-634-0664
NSN 5855-00-327-2112
NSN 5935-00-185-5560
NSN 5975-01-141-0103
NSN 6220-01-167-7859
NSN 6650-01-631-6576
NSN 6220-00-447-0517
NSN 5855-01-258-5161
NSN 5855-01-173-0808
NSN 7035-00-631-3782