When making a threaded connection, if the fitting stops at the 2nd thread, what is the next step?

When a fitting stops at the second thread while making a threaded connection, it indicates that there could be an issue with how the fitting is engaging with the pipe threads. Continuing to tighten could risk cross-threading or damage to both the fitting and the pipe, leading to potential leaks or failure of the connection. Therefore, it is essential to pause and assess the situation to ensure that the fitting is properly aligned and that the threads are in good condition. Taking this step is crucial for maintaining the integrity and functionality of the connection, making it a critical point in the assembly process.