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 5935-01-067-4632
NSN 6685-01-493-4883
NSN 5950-01-034-3516
NSN 6110-01-422-7928
NSN 6610-00-291-9093
NSN 5975-01-487-4379
NSN 6220-00-147-7064
NSN 5915-00-723-0570
NSN 5930-01-425-8517
NSN 6150-00-693-4226
NSN 5905-00-472-7795
NSN 5915-00-420-1323