The 9/16" - 12 Thread Repair Kit allows for the removal and repair of damaged threads in a tapped hole. They can be replaced by chasing the threads using a thread chaser (a device designed to clean and restore factory threads) or installing an insert that contains new threads of the same size.
Features
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⦿ Helical Installation & Tang Break-Off Tool
This easy to use hand tool will make the installation of your Helical Screw Thread Inserts a breeze. Manufactured out of carbon steel it will stand the test of time and power through your toughest jobs.
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⦿ 6 Pieces of 9/16" - 12 Helical Threaded Inserts
Quickly and easily repair stripped or damaged threads, or create stronger original threads in die castings or plastics with our Helical Screw Thread Inserts. Coil tension securely holds the insert in place without undue tension on the surrounding material. The inserts are vibration and impact resistant. Made from corrosion resistant stainless steel, they offer a wide temperature tolerance.
Helical Inserts are often known by the brand names Helicoil or Recoil Screw Thread Inserts. Our Precision Thread Helical Inserts are interchangeable with other brands of inserts and tooling.
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⦿ HSS STI Plug Tap
Screw Thread Insert (STI) Taps are used specifically to create threads for Helical Thread Inserts. STI Taps are oversized so the thread produced will accept a Helical Wire Insert of the same nominal size and pitch - meaning the hole created by the Tap goes back to the original dimension allowing the original fastener to be used.
The "Plug" style Tap is ideal for starting or tapping a through hole. The Tap can be used and the Helical Insert can be installed in most materials including aluminum, magnesium, cast iron, carbon steel, stainless steel, and plastic.
Simple Installation Process
The first step in creating a new, stronger thread is cleaning up the original, damaged threads. This is done with a standard drill, kits do not include drills, please find the recommended drill size below. The hole is then tapped with an oversize (STI)* tap provided in each thread repair kit. The free diameter of the helical threaded inserts is larger than the new threaded hole, but it is easily “wound” into place with the inserting tool provided.
Once in place, the helical threaded insert tends to spring back to its original diameter, giving it a very strong grip in the hole. Finally, the driving tang is broken off by tapping downward with the end of the inserting tool.
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