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 5905-01-542-4963
NSN 5925-01-456-0763
NSN 6240-00-250-8693
NSN 5910-01-274-6082
NSN 6620-00-820-9616
NSN 5835-01-583-8358
NSN 2925-01-250-2731
NSN 4140-01-522-3865
NSN 5920-01-317-3506
NSN 5985-01-367-2842
NSN 7035-00-870-0290
NSN 5996-01-428-6544