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 5950-01-247-6167
NSN 6220-01-152-2637
NSN 6650-01-005-8570
NSN 6240-01-530-2210
NSN 6220-01-395-9483
NSN 5920-01-604-9045
NSN 6110-01-330-1361
NSN 7035-00-349-8571
NSN 5910-01-350-3252
NSN 6685-01-294-4562
NSN 5960-01-471-8201
NSN 6220-01-588-7104