16806. According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by September 13, 2025 by Admin 0.5 mm upto rivet diameter of 24 mm 1 mm for rivet diameter from 27 mm to 36 mm 2 mm for rivet diameter from 39 mm to 48 mm all of the above ✅ The correct answer is option C.