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 5910-00-169-2060
NSN 6610-01-539-9084
NSN 5985-01-134-5252
NSN 6130-01-461-8928
NSN 5950-00-193-0584
NSN 5945-01-471-8386
NSN 5965-01-503-8485
NSN 6145-00-278-0697
NSN 5935-01-190-0009
NSN 5990-01-423-8189
NSN 6620-00-581-8984
NSN 5990-00-832-2557