Tight threads produced by a tapping operation may indicate which issue?

Tight threads produced by a tapping operation may indicate tap wear because as a tap becomes worn, its cutting edges become less effective at removing material from the hole. This can lead to excessive material being left in the thread profile, resulting in threads that are tighter than intended. When the tap is new, it cuts accurately to form the desired thread pitch and diameter. However, with wear, the tap can create threads that are too small, which causes increased friction and tightness when a fastener is inserted into the threaded hole. It’s crucial to regularly inspect taps for wear and replace them as necessary to maintain proper thread quality and prevent issues like tight threads.

While other factors such as using the wrong tap size or incorrect drilling depth could lead to thread issues, the specific indication of tight threads is more directly linked to the condition of the tap, which is why tap wear is the correct choice in this case.