To facilitate manufacturing, which approach to part tolerances is recommended?

• A. Larger
• B. Smaller
• C. Tighter
• D. Looser

Answer: (A)

A larger tolerance is the best choice here. When the allowed variation is bigger, parts can vary more from the nominal size and still be acceptable, which makes manufacturing easier and cheaper. It reduces machining time, tooling wear, inspection burden, and scrap rates, all of which speed up production. The goal in manufacturing is to meet functional needs while loosening tolerances as much as possible without compromising performance, so larger tolerances help facilitate fabrication. In contrast, smaller or tighter tolerances demand more precise machining, longer setup times, more rigorous inspection, and higher costs, making production more challenging.