Manufacturer Part Number: 2C-137-A|Style|Two PieceShaft Collars Type|Two Piece Split ShaftBore Type|PlainBore Diameter|1.3750Thread Size|Outside Diameter (Decimal Inch - 4 Decimals)|2.2500Outside Diameter (Inch)|2-1/4Outside Diameter (mm)|Keyway Width (Inch)|Material|AluminumWidth (Inch)|9/16Finish|PlainSeries|2CStandards|ISO 9001:2008Additional Information|Material Grade|6061-T651Maximum Torque|Length (Inch)|Reduced Inside Diameter|Width (Decimal Inch - 4 Decimals)|0.5625UNSPSC Code|