Machine key, keyway, tolerances, milling. Best approach to dimensioning

Grub screw/ set screw - https://www.jcfasteners.com/products/... Types of shaft keys -    • Types of Shaft Keys - Introduction with An...   Basis of Fitting Selection / Dimensional Tolerances and Fitting Dimension Tolerance for Regularly Used Fitting https://in.misumi-ec.com/pdf/fa/2014/... Machine Keys and Key Grooves - https://in.misumi-ec.com/pdf/tech/mec...