Taper Lock Bushing Bushing Type Taper Lock Bore Bushing Series 1615 Bore Diameter 1/2 in Length 1.5 in Bolt Circle Diameter 2.13 in Bolt Size Not Applicable System of Measurement Inch Fastener Tightening Torque Capacity 4 300 in-lb Flange Type Flangeless Flange Width Not Applicable For Shaft Type Keyed Includes (2) Set Screws Keyway Height 1/16 in Keyway Width 1/8 in Length Less Flange Not Applicable Material Steel Overall Diameter 2.25 in Taper 8 Degrees