"MATERIAL IS NO.1141 HR STEEL; HARDNESS BHN 241-187; HAS SET SCREW PERPENDICULAR TO KEYWAY 1.5"" FROM HUB END; KEYING FACILITY QUANTITY: 1; DISTANCE FROM CENTERLINE TO KEYING FACILITY: 1.500 IN. NOMINAL; MAJOR DIAMETER: 2.4385 IN. NOM.; WIDTH: 0.628 IN. NOM.; BOLT CIRCLE DIAMETER: 6.124 IN. NOM.; FLANGE THICKNESS: 0.3750 IN. NOM.; MOUNTING HOLE DIAMETER: 0.375 IN. NOM.; OVERALL DIAMETER: 6.800 IN. NOM.; BORE LENGTH: 3.500 IN. NOM.; HUB LENGTH: 3.500 IN. NOM.; HUB OUTSIDE DIAMETER: 5.250 IN. NOM."