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 5835-01-416-6455
NSN 5996-01-062-0807
NSN 6620-00-834-9430
NSN 5935-00-632-7795
NSN 5910-00-996-3758
NSN 5920-00-285-0901
NSN 5920-01-378-8924
NSN 6110-01-415-7890
NSN 6110-01-005-5140
NSN 5975-01-551-8663
NSN 6240-01-502-1211
NSN 5960-00-820-7429