Keyed Rotary Shaft, Material 1045 Carbon Steel, Diameter 1 3/8 in, Overall Length 48 in, System of Measurement Inch, Diameter Tolerance +0.0000/-0.0030 in, End Type Keyed, Finish Polished, Keyway Depth 5/32 in, Keyway Length 48 in, Keyway Width 5/16 in, Length Tolerance +/-0.0620 in, Standards ASTM A108, Step Down Diameter Not Applicable, Step Down Diameter Tolerance Not Applicable, Straightness Tolerance 0.012 in/ft, Thread Size Not Applicable, Groove Spacing Not Applicable, Number of Grooves 0