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 5895-01-085-5471
NSN 6240-00-395-0019
NSN 6320-00-070-4544
NSN 5935-01-535-5068
NSN 5998-01-253-8239
NSN 5998-00-984-1420
NSN 5985-00-191-2924
NSN 6685-01-157-1288
NSN 6110-00-960-7341
NSN 6240-00-431-4372
NSN 6130-00-270-6520
NSN 5910-00-133-5353