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 6685-01-147-4462
NSN 5950-00-807-7925
NSN 5925-01-597-2065
NSN 5998-00-145-7643
NSN 5935-01-444-1549
NSN 6145-01-502-7553
NSN 6685-01-310-1552
NSN 5960-01-389-4055
NSN 6620-01-102-0008
NSN 5998-00-288-5533
NSN 4140-01-127-0032
NSN 5895-01-463-7118