Helicoil STI Thread Taps are designed to prepare internal threads for installing Helicoil thread inserts. Made from High-Speed Steel (HSS), these taps provide a suitable thread profile and clearance for secure insert installation. They are commonly used for repairing damaged or worn internal threads in automotive, machinery, fabrication, and general engineering applications. Available in different sizes and thread specifications, Helicoil STI Thread Taps can be used for Metric, UNC, UNF, and other thread requirements. DIC Tools manufactures and supplies STI Thread Taps with different specifications and customization options to meet specific application needs