Keyed Rotary Shaft, Material 303 Stainless Steel, Diameter 1/2 in, Overall Length 48 in, System of Measurement Inch, Diameter Tolerance +/-0.0025 in, End Type Keyed, Finish Passivated, Keyway Depth 1/16 in, Keyway Length 48 in, Keyway Width 1/8 in, Length Tolerance +/-0.0620 in, Standards ANSI B17.1-1967, ASTM A-582 Cond A, 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