Special Features:

Left id counterbored to 5.140 in.Dia by 0.147 in. Deep w/one groove 0.084 in. W by 5.245 in. Diameter located 0.063 in. From left end and one central internal groove 0.190 in. W by 5.237 in.Dia, two holes 0.062 in. Diameter drilled 0.300 in. Deep 180 degrees apart on od 0.167 from left end at 13 degrees angle

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.