Keyless Rigid Coupling Coupling Length 87.9 mm Coupling Material Carbon Steel Included Screws 148.1 mm For Motion Type 12 Zero Backlash Metric Screw Material 65 mm Maximum Speed 65 mm Resistance Properties Round Maximum Torque 80 mm Fastener Tightening Torque 11 099 N-m Outside Diameter Oil Dipped Overhung Load Capacity +0.000 mm / -0.152 mm Bore Type 60 N-m System of Measurement Metric Length through Bore (12) Locking Screw Screw Length 65 mm Number of Locking Screws M10