Keyed Rotary Shaft, Material 2024 Aluminum, Diameter 3/8 in, Overall Length 24 in, System of Measurement Inch, Diameter Tolerance +/-0.0025 in, End Type Keyed, Finish Polished, Keyway Depth 3/64 in, Keyway Length 24 in, Keyway Width 3/32 in, Length Tolerance +/-0.0620 in, Standards ASTM B211 2024-T4 and T351, 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