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 5930-00-336-5885
NSN 6240-01-340-7591
NSN 6145-01-161-5557
NSN 4140-01-178-9391
NSN 5925-01-429-0392
NSN 5965-00-698-0433
NSN 6220-01-128-0087
NSN 5950-00-996-5255
NSN 6105-01-089-9143
NSN 2925-01-446-6976
NSN 6645-01-179-0243
NSN 5915-01-193-6298