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 6320-01-185-3857
NSN 5985-01-091-4509
NSN 6220-01-302-0185
NSN 6150-01-289-2944
NSN 6130-00-007-3787
NSN 5925-01-227-4631
NSN 5905-01-041-9088
NSN 4140-00-879-0862
NSN 6105-01-055-5049
NSN 5950-01-534-6924
NSN 5960-01-319-0276
NSN 5930-01-649-5823