Ruland FCR12-5-4-A Clamping Beam Coupling, Polished Aluminum, Inch, 5/16" Bore A Diameter, 1/4" Bore B Diameter, 3/4" OD, 1-1/4" Length, 20 lb-in Nominal Torque

.Six beam couplings have higher torque and torsional stiffness than four and single beam couplings for use in light duty power transmission applications such as connecting a motor to a lead screw
.Zero-backlash and a balanced design for reduced vibration at speeds up to 6,000 RPM
.Manufactured from 7075 aluminum for light weight and low inertia
.Nypatch anti-vibration hardware prevents galling, maintains high holding power, and allows for multiple screw insertions.Hardware exceeds DIN 912 12.9 standards for maximum torque capabilities
.Ruland beam couplings are carefully made from select North American bar stock in our Marlborough, Massachusetts factory and are RoHS3 and REACH compliant