The depth of a pipe thread may be tested by turning a fitting on by hand how many turns?

The depth of a pipe thread is commonly assessed by the number of turns it takes to screw a fitting onto the pipe. When fitting is turned by hand, it is typical to achieve a secure and proper connection with approximately three complete turns. This is consistent with the standard practices in pipefitting, ensuring that the threads are properly engaged without risking cross-threading or damaging the fitting.

Achieving three turns allows for a snug fit, confirming that the thread depth is adequate for a leak-free connection, while not being overly tight, which could cause damage. Fewer than three turns may indicate insufficient engagement, while more than three could suggest over-tightening or that the fitting may not be appropriately matched to the pipe, including potential inconsistencies in thread depth. Therefore, three turns are generally accepted as optimal for testing the adequacy of pipe thread depth in this context.