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 6110-01-617-3658
NSN 5990-00-159-1774
NSN 5895-01-519-2461
NSN 4140-01-426-8428
NSN 5920-00-792-5581
NSN 6645-01-062-3594
NSN 5935-00-054-6831
NSN 2925-00-099-4030
NSN 4140-00-281-4493
NSN 5835-01-160-7282
NSN 6105-00-244-3007
NSN 5998-01-515-0410