Ring has several bolt holes and rivets around perimeter, unequally spaced
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.
NSN 5950-01-474-9643
NSN 5999-00-459-1211
NSN 5930-00-081-0362
NSN 5925-01-225-0614
NSN 5835-01-013-8797
NSN 6135-01-231-4809
NSN 6135-01-183-8993
NSN 5895-01-606-4401
NSN 5990-01-288-7393
NSN 6150-00-911-7623
NSN 6320-01-513-9166
NSN 5965-01-212-6663