Special Features:

Smallest bolt hole quantity is 12, 6 bolts with a bolt hole diameter .234 inches and .242 inches and 6 bolts located on the inside ears of the inside diameter with a bolt hole diameter of .209 inches and of .217 inches, large bolt hole quantity is 3 with a bolt hole diameter of .531 inches, the bolt hole circle diameter for 6 small bolts and 3 large bolts is 4.480 inches

Properties:

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.