What are Helisert Taps?

"Helisert" is a brand name of the helical coil wire manufactured in India and used throughout Asia. "Helicoil" is the brand name of the helical wire manufactured in the USA and used throughout North America. A helical coil wire is inserted into an internal screw thread to prevent damage and reinforce the original thread. Each manufacturer has its own brand name.
YAMAWA calls these "Helical Coil Wire Screw Thread Inserts". We produce and sell selective taps for this particular usage in a variety of tap series such as
Hand Taps, Spiral Fluted Taps, Spiral Pointed Taps, and others.