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 5960-00-597-2680
NSN 6105-00-490-6035
NSN 6240-01-107-7371
NSN 5855-01-138-4985
NSN 6620-00-932-4306
NSN 6145-00-530-3811
NSN 5990-00-839-9571
NSN 6240-01-594-5703
NSN 6135-00-025-6382
NSN 6135-00-078-9931
NSN 5975-01-412-0782
NSN 5925-01-431-7057