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 6150-00-191-5258
NSN 6610-01-548-3401
NSN 6150-01-147-6177
NSN 6105-01-029-3764
NSN 5935-00-527-8657
NSN 5855-00-782-7714
NSN 5925-01-501-8667
NSN 6620-01-513-4143
NSN 6685-01-156-1110
NSN 6610-01-462-5980
NSN 6150-01-554-2479
NSN 5835-01-457-5630