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 5960-01-006-8469
NSN 5910-01-224-2309
NSN 5920-01-122-1509
NSN 7035-01-337-1729
NSN 6240-01-381-5541
NSN 6620-00-907-9756
NSN 5925-01-444-8923
NSN 5915-01-068-2703
NSN 5965-01-442-7364
NSN 4140-00-590-2317
NSN 6650-01-166-5025
NSN 5835-01-307-8954