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 5895-01-037-2004
NSN 5945-00-887-8820
NSN 5915-01-382-8156
NSN 5990-01-483-7313
NSN 6145-01-471-7422
NSN 5996-00-939-2346
NSN 5998-01-240-6393
NSN 5930-01-290-0692
NSN 6150-00-418-8498
NSN 2925-00-491-3549
NSN 6240-01-141-5230
NSN 4140-01-302-9015