They also have longer than the standard 1/2” long helicoils in some sizes. I did buy a box of 3/4” long helicoils in 3/8” size from one of the big suppliers of fasteners and hardware on the net. If it is possible to repair, i would try to use the longest that is possible. I think the company i used was Mcmaster Carr or MSC industrial. Good luck


1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.