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 6220-01-247-8607
NSN 5915-01-510-3867
NSN 6105-00-024-8702
NSN 5835-01-462-5983
NSN 5960-00-081-3712
NSN 5935-00-446-8811
NSN 5950-01-026-2284
NSN 5990-00-506-8315
NSN 6220-01-142-3148
NSN 5990-01-501-5409
NSN 5960-01-412-0619
NSN 7035-01-617-6637