In front of you is an NPTF tapered-thread assembly. The recommendation is to turn, not torque, to tighten the assembly. But all you have is a torque wrench. Or maybe you have an SAE straight-thread port assembly, which has a suggested assembly torque, and your torque wrench is nowhere in sight. The inevitable question pops up: Can’t you just crank that fitting down and be done with it? Tight is tight, right?
Short answer: No. Turn refers to the number