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 5945-00-935-6922
NSN 5915-00-151-4629
NSN 6110-01-041-1631
NSN 5998-01-298-3168
NSN 5975-01-401-5355
NSN 6135-01-203-9977
NSN 6240-01-201-4314
NSN 5985-01-322-8571
NSN 6135-00-334-4500
NSN 5895-01-510-1895
NSN 5999-00-631-9315
NSN 5855-00-933-9978