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 5895-00-345-8018
NSN 7035-01-246-3086
NSN 6650-00-155-8431
NSN 5965-00-529-0602
NSN 5855-01-623-0119
NSN 6110-00-455-3462
NSN 6240-00-038-7540
NSN 5990-01-390-2177
NSN 5855-01-644-3271
NSN 5950-01-501-5682
NSN 5905-01-573-0695
NSN 5935-00-171-8837