Rigid Shaft Coupling Bore Diameter 1 5/8 in Bore Diameter 2 5/8 in Bore Type Round Keyed Clearance Diameter 1.5 in Coupling Construction One-Piece Coupling Material Stainless Steel Coupling Outside Diameter 2 1/4 in Different Bore Sizes No Keyway Depth 1 3/32 in Keyway Depth 2 3/32 in Minimum Bore Diameter 5/8 in Keyway Width 1 3/16 in Keyway Width 2 3/16 in Maximum Bore Diameter 5/8 in Maximum Speed 3 500 RPM Maximum Torque 338 in-lb Overall Length 2 in