The minimum amount of torque the screw must withstand before shearing.
If you work extensively with piping, buy the or the B1 Thread Standards Set . asme b1864 pdf
These fasteners are designed to create their own mating threads (tapping) when driven into a pre-drilled or pre-punched hole, or to cut threads (thread-cutting) into plastics, metals, and other materials. Key Content of the Standard: The minimum amount of torque the screw must
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