The Cromclad Netco 396-3/8-16NC-GH3-STI Bottoming Tap is a 4-flute, high-speed internal-threading tap sized 3/8-16 NC, designed to cut threads to the bottom of blind holes. Its GH3-STI designation denotes its geometry and STI classification for reliable, precise tapping in metalworking applications. Use this bottoming tap when you need full-thread engagement in blind holes without leaving a partial thread at the bottom.
