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 6145-01-646-6156
NSN 5996-01-107-5737
NSN 6610-00-223-2558
NSN 5945-00-806-2604
NSN 5925-00-008-4413
NSN 5915-00-899-9890
NSN 5960-01-094-9540
NSN 5895-00-096-5187
NSN 5998-00-089-2889
NSN 2925-00-150-7334
NSN 5855-00-494-9581
NSN 5998-01-532-9219