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 5999-00-516-9964
NSN 5920-01-441-9363
NSN 5930-01-557-4362
NSN 5998-00-262-4879
NSN 2925-00-915-1827
NSN 2925-00-386-8745
NSN 5950-00-170-8477
NSN 5998-01-471-7104
NSN 2925-00-149-0760
NSN 5925-01-094-1403
NSN 5999-00-782-1188
NSN 6610-00-261-8159