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 5950-01-630-7429
NSN 5990-00-932-3070
NSN 2925-00-441-8255
NSN 5960-00-248-3065
NSN 5996-01-278-6681
NSN 5910-00-480-1898
NSN 6130-00-937-8685
NSN 5920-00-519-7664
NSN 5960-01-089-8155
NSN 5998-01-424-0464
NSN 5905-01-421-3901
NSN 5998-01-416-7570