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 5835-01-485-0210
NSN 5998-00-813-5393
NSN 5985-01-287-5266
NSN 5960-00-952-6705
NSN 5895-01-343-9198
NSN 5895-01-025-6125
NSN 6110-01-322-4659
NSN 6130-00-660-8848
NSN 5998-00-319-2833
NSN 5975-00-553-7151
NSN 6110-01-379-3894
NSN 2925-01-089-6269