30 Piece M5 x 0.8mm Thread Repair Insert Kit, Stainless Steel Thread Repair Kit Helicoil Coil Compatible Hand Tool Set for Auto Repair

M6 is a great recommendation by u/DrShowalter. If you want to stick with M5, you can also use an insert with a 5.2mm hole size. https://www.amazon.com/Fixinus-Thread-Stainless-Helicoil-Compatible/dp/B0C2H2GCWS