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 6110-01-213-7469
NSN 5935-01-432-1166
NSN 5915-01-601-8365
NSN 6150-01-628-0509
NSN 5895-01-044-7750
NSN 5985-01-534-5581
NSN 5925-01-347-4315
NSN 5905-00-157-5708
NSN 5998-01-389-3414
NSN 5835-01-004-8997
NSN 6135-00-708-0892
NSN 5905-01-541-4609