Regal 1-1/2-6 plug hand tap with a 4-flute design is built for manual thread cutting in cast iron workpieces. The tool is specified as NA HSG 2G 11G Cast Iron, indicating its alignment with standard internal-thread tolerance classes for this size. This plug-style tap is intended for creating internal threads in cast iron, delivering precise thread form with a hand-tap configuration suitable for on-site or workshop tapping tasks.
