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 5930-01-249-9971
NSN 5930-01-556-9115
NSN 5930-00-558-6549
NSN 6110-01-586-3134
NSN 5935-00-573-9473
NSN 5999-01-521-8713
NSN 5925-01-634-0664
NSN 5855-01-346-2881
NSN 5855-01-602-9335
NSN 5930-00-995-2050
NSN 5996-01-345-7547
NSN 5930-01-525-8611