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 5910-00-901-9278
NSN 5985-01-213-2955
NSN 5935-01-215-3523
NSN 6135-01-628-1688
NSN 5905-00-790-6090
NSN 5930-01-193-2238
NSN 5835-01-249-7393
NSN 6135-00-276-7625
NSN 6620-00-126-5072
NSN 5925-01-423-7803
NSN 5915-01-127-7024
NSN 6610-00-851-3203