The free PDFs floating around the internet are usually (from the early 2000s). Steam tables, bolt grades, and material properties have been updated by the BIS (Bureau of Indian Standards). Using outdated data in a design project or competitive exam (like GATE 2024/2025) can lead to wrong answers.
: Specific data for I.C. Engine parts (Ch 21) and Cams (Ch 22). machine design data book by jalaluddin pdf
How to use it effectively