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 6650-01-420-0233
NSN 5999-01-476-7826
NSN 5925-01-172-8616
NSN 5895-01-361-3330
NSN 5930-01-360-8714
NSN 6135-00-405-1989
NSN 2925-00-964-7128
NSN 6620-01-286-6769
NSN 4140-01-409-1764
NSN 6130-01-268-7117
NSN 5990-01-490-4341
NSN 6650-00-952-2754