Motion Control Coupling Hub Angular Misalignment 0.5 Degrees Axial Motion 0.004 in Coupling Size OST8 Outside Diameter 0.5 in Over-Standard Parallel Misalignment 0.05 in Parallel Misalignment 0.004 in Coupling Overall Length 0.625 in Hub Material Aluminum Length through Bore 0.222 in System of Measurement Inch Bore Diameter 1/4 in Maximum Speed 4 500 RPM Bore Type Round Shaft Locking Type Set Screw Keyway Depth Not Applicable Keyway Width Not Applicable