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 6145-00-715-5262
NSN 7035-01-573-5916
NSN 5930-00-111-4301
NSN 5920-00-655-1154
NSN 6150-01-457-2130
NSN 6150-01-125-6707
NSN 5996-00-058-5867
NSN 5935-01-443-1957
NSN 5950-01-243-4440
NSN 5945-01-501-0407
NSN 5930-01-421-7832
NSN 5910-01-384-3808