Linear Shaft, System of Measurement Inch, Diameter 5/8 in, Shaft Type Solid Shaft, End Type Plain Ends, Core Type Solid, Overall Length 18 in, Surface Hardness - Minimum 60 HRC, Material Carbon Steel, Finish Unfinished, End Thread Size Not Applicable, Mounting Hole Thread Size Not Applicable, Diameter Tolerance - Minimum 0.624 in, Diameter Tolerance - Maximum 0.625 in, Mounting Hole Center to Center Not Applicable, Mounting Hole Center to Shaft End Not Applicable