D-Profile Rotary Shaft, Material 1045 Carbon Steel, Diameter 8 mm, Overall Length 300 mm, System of Measurement Metric, Diameter Tolerance +0/-0.05 mm, End Type D-Profile, Finish Polished, Keyway Depth Not Applicable, Keyway Length Not Applicable, Keyway Width Not Applicable, Length Tolerance +/-1.6 mm, Standards ASTM A108, Step Down Diameter Not Applicable, Step Down Diameter Tolerance Not Applicable, Straightness Tolerance 1.1 mm/m, Thread Size Not Applicable, Groove Spacing Not Applicable