Keyless Rigid Coupling Coupling Length 1.58 in Coupling Material Carbon Steel Included Screws 2.36 in For Motion Type 5 Zero Backlash Inch Screw Material 13/16 in Maximum Speed 0.81 in Resistance Properties Round Maximum Torque 1.34 in Fastener Tightening Torque 362 ft-lb Outside Diameter Oil Dipped Overhung Load Capacity +0.000 in / -0.003 in Bore Type 9 ft-lb System of Measurement Metric Length through Bore (5) Locking Screw Screw Length 35 mm Number of Locking Screws M6