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 5996-01-585-3295
NSN 2925-01-562-8051
NSN 2925-01-161-2325
NSN 7035-01-350-4247
NSN 5910-00-681-3003
NSN 6320-01-129-9656
NSN 6620-01-039-5468
NSN 6645-01-245-8390
NSN 2925-01-146-0278
NSN 5835-01-392-7683
NSN 5960-01-593-4760
NSN 5960-01-425-1454