The tailgate panel sheet metal screws would no longer take a hold in the sheet metal of the tailgate on my 89 S15 Jimmy. I been trying to figure out the best way to accomplish a permanent repair. I decided to install rivnuts into the panel and use regular screws. I installed M5 threaded inserts for all of the screws. I used M5X25mm GR10.9 Black Nickle Socket countersunk screw for the bottom of the tailgate and M5X25mm GR8 Black Nickle Socket button head screw for the R/L top sides of the tailgate panel. Panel is secured tightly and the hardware looks great. The grade of the screws is an overkill but I ordered them on Ebay from China at $2.46 for 10ea of the countersunk screws and $1.99 for 10ea of the button head screws. I like socket head hardware in general and I wanted only one tool to remove the panel.