Keyless Rigid Coupling Coupling Length 40.1 mm Coupling Material Carbon Steel Included Screws 59.9 mm For Motion Type 5 Zero Backlash Metric Screw Material 24 mm Maximum Speed 24 mm Resistance Properties Round Maximum Torque 34 mm Fastener Tightening Torque 571 N-m Outside Diameter Oil Dipped Overhung Load Capacity +0.000 mm / -0.076 mm Bore Type 12 N-m System of Measurement Metric Length through Bore (5) Locking Screw Screw Length 35 mm Number of Locking Screws M6