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 5965-00-501-7835
NSN 4140-01-383-1862
NSN 6685-01-173-3994
NSN 5910-01-102-5576
NSN 5895-01-397-8050
NSN 5960-01-573-6483
NSN 5935-01-321-2835
NSN 6620-00-252-6425
NSN 6685-01-330-2059
NSN 6220-01-534-6695
NSN 6610-00-175-7250
NSN 5950-01-348-3173