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 5996-01-330-8742
NSN 5965-00-355-9564
NSN 4140-01-468-5792
NSN 6240-01-312-5282
NSN 6320-01-544-0860
NSN 2925-01-604-8984
NSN 5998-01-227-2416
NSN 5930-00-486-1383
NSN 6650-01-033-6667
NSN 5985-00-463-3954
NSN 5895-00-349-4796
NSN 5975-01-257-3494