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 5996-01-437-8824
NSN 5975-01-378-8796
NSN 5920-00-081-9156
NSN 5835-01-095-8851
NSN 5915-01-492-6153
NSN 6135-01-167-7604
NSN 6240-01-507-3609
NSN 5930-00-075-2557
NSN 7035-00-135-4758
NSN 5925-00-445-3348
NSN 6150-01-425-9865
NSN 6135-01-469-7574