Helicoil Threading Taps, also known as STI taps, are designed to create the internal thread required for installing wire thread inserts. They are widely used for thread repair, maintenance, and applications where strong and reusable threaded holes are required. DIC Tools offers quality Helicoil Threading Taps manufactured for consistent thread formation and dependable machining results. These taps are suitable for repairing damaged threads and preparing holes for Helicoil insert installation across automotive, engineering, machinery, and industrial applications. Choosing the correct Helicoil tap size, thread specification, and tapping method helps ensure proper insert fit and reliable thread engagement. With suitable STI Taps, manufacturers can achieve accurate internal threads and extend the service life of components.