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 5985-01-196-6144
NSN 4140-00-686-4894
NSN 5990-00-481-7208
NSN 6240-00-482-9188
NSN 5935-01-031-6993
NSN 5960-00-448-9414
NSN 5935-00-655-1326
NSN 6320-01-155-4807
NSN 6130-01-590-0487
NSN 7035-01-295-1609
NSN 6145-01-047-1149
NSN 5915-00-402-0061