RivNut size for gas tank skid plate

[robfg67]

As you can see from the picture, the strap holding the gas tank skid plate to the frame needs to be fastened. The holes appear larger than 1/2" in diameter.

 

Does anyone know what size RivNut I need so i can bolt it in place?

 

 

[eaglescout526]

Whatever will fit. I wish I remembered what size I used. Might’ve been M10 or 12. 

[fiatslug87]

These are the hole sizes my rivet nut tool has listed.

[robfg67]

Thanks for the chart