Why Small Burrs Cause Big Problems with HVAC valve stems

https://component-craft-journal.stonefielddigest.com/posts/troubleshooting-fit-problems-in-thermal-probe-housings

Why Small Burrs Cause Big Problems with HVAC valve stems Production teams often know a part is key only after it causes a delay. HVAC valve stems support heating and cooling controls, and their fit can affect steady valve movement