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 5935-01-483-1384
NSN 7035-01-207-2676
NSN 5915-01-322-7668
NSN 5998-01-043-0802
NSN 5925-00-175-9349
NSN 5950-00-952-7097
NSN 7035-00-968-4848
NSN 6135-01-422-1440
NSN 5930-00-573-1439
NSN 5910-00-260-6944
NSN 2925-01-359-4027
NSN 5996-00-612-1590