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 5910-01-208-4699
NSN 5965-00-134-0287
NSN 2925-01-430-4206
NSN 5855-00-327-2112
NSN 5985-00-129-8617
NSN 2925-01-459-8093
NSN 5985-00-414-0393
NSN 5960-00-438-8577
NSN 6150-01-019-5734
NSN 4140-00-466-9268
NSN 7035-01-123-8723
NSN 5975-01-466-0613