This thread insert idea has been rehashed a bunch here & there but I don't know the location of that screw w/o looking as for amt of metal and opening to work but I'll throw this out- there are many brands of inserts & many have different "models" that offer various metals,lengths and wall thicknesses and that's in addition to the fact that there various installation methods & tools needed. Some also offer threads not available in others. Some you have to buy several , others only a few. My point here(comes from experience) is to not limit your search to helicoil brand. Once you know every aspect of the situation then look for what works best for that.
I often use a brand/model called "Thinsert" and there are suppliers that will sell a couple. They are thinwall but strong. It's possible to install some types/brands w/o buying special tools needed for insertion or special taps that are weird sizes & pricey. Look around a lot before you pick one. The Chinese are selling insert kits on ebay too. Fastenal is all USA over but charges a bunch for shipping small stuff that comes in on their own truck! & it comes to them, not my house. Ebay is a good place to wander around the insert types .
I often use a brand/model called "Thinsert" and there are suppliers that will sell a couple. They are thinwall but strong. It's possible to install some types/brands w/o buying special tools needed for insertion or special taps that are weird sizes & pricey. Look around a lot before you pick one. The Chinese are selling insert kits on ebay too. Fastenal is all USA over but charges a bunch for shipping small stuff that comes in on their own truck! & it comes to them, not my house. Ebay is a good place to wander around the insert types .