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 5985-01-236-2834
NSN 4140-01-657-1239
NSN 5945-01-091-3437
NSN 5910-01-462-0370
NSN 6240-01-553-3253
NSN 6110-01-562-0845
NSN 5950-01-247-3531
NSN 6220-00-694-6649
NSN 5925-01-456-0763
NSN 5965-01-374-9075
NSN 5945-01-364-8496
NSN 7035-00-215-3272