IMPA Code: 693801
Made of stainless steel or bronze.
Instead of building up a thread hole by welding worn out threads or using bushes for rethreading, you just have to clean the hole with a tap and insert these heli-serts.
Tightening procedure is the same as with the original thread.
The proper length of the heli-sert should usually be 1-2 times the length of the standard bolts being used.
