What bolt size/thread needed for 2017 running board mounting

Hi all. I'm buying a set of factory take off running boards for my 2017 crewmax but the seller reused his mounting bolts so they're not included in the sale.

Anyone know the lenght/size/thread needed for these?

 

When I installed mine there were already bolts in the mounting holes. I was surprised to find them. If you have those, it would help figure out the thread and length you need or maybe you can use them?

 

You can goto fastenal and they’ll figure it out and likely have them on hand.

 

This. When I installed mine I used the bolts that were already on my truck, they felt heavier duty than the set that came with the boards from Toyota .

 

Sweet that's what I'll plan for the moment then.

Thanks everyone!

 

Go test drive a truck with no boards. Take a wrench!!!