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 5945-01-432-2416
NSN 5910-01-417-2475
NSN 5945-01-413-1282
NSN 5999-01-059-0460
NSN 5895-01-442-6518
NSN 6620-01-252-9626
NSN 5910-01-545-6648
NSN 5895-00-400-5001
NSN 6105-01-299-3114
NSN 5910-00-618-0196
NSN 6150-01-194-8883
NSN 5915-01-418-7221