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 4140-01-364-0109
NSN 5996-01-244-0222
NSN 5855-01-286-2916
NSN 5935-00-351-0483
NSN 2925-00-201-8247
NSN 6220-01-349-8666
NSN 5975-01-569-4254
NSN 6150-01-545-1821
NSN 6685-01-110-1783
NSN 6130-01-588-5531
NSN 6150-01-416-6926
NSN 5915-00-467-1585