2021 Ford Transit Cargo Van Pre-drilled factory HOLE SIZES for bolts and rivnuts

Wondering what size bolts and rivnuts/plusnuts to buy for your van conversion? Here’s a quick video of the various hole sizes in the 2021 Ford transit medium roof cargo van.
Threaded Rear cargo door area, and above the wheel wells: M10 x 1.5
Threaded holes in upper side walls: M8 x 1.25
Non-threaded holes in walls: the large majority will fit M6 rivnut perfectly. I tried 1/4x20 prebulbed cross nuts and they were way too big to fit without being hammered in (which is not recommended).
The ceiling was a mixed bag. 1/4x20 previlbed plus nuts worked in two of the holes. The rest were random sizes that wouldn’t fit any rivnuts so I drilled them out to fit an m6 and coated with rustoleum.
Did I miss any holes? Let me know in the comments.

[@Thor_Underdunk_Caballerial]

Fantastic video, you've done a great service for everyone.

[@florencetissot4576]

awesome! thank you for taking the time to make this video. I had finally came to the same conclusion about the M6. Wish i had found your vid sooner!

[@timwolf1815]

Excellent information. No bull, just facts. Thankyou!

[@YNotBeeAntoine]

Thanks. Just what I was looking for.

[@rubenespinosajr4553]

Such a helpful video. Thank you.

[@summerzaddy4554]

Thank you so much I have been searching for this exact information for awhile now . And I just subscribed 😊

[@GoMandiMartin]

This is amazing! Thank you so much! 🙂

[@angeljia3506]

Super helpful! Thank you so much! Subscribed and following

[@thudang3039]

Thanks for sharing!

[@focerzx3]

Fantastic! Thank you!

[@rettim0]

Great resource! Thanks. I thought I was going crazy when I couldn't find a system to the holes! Wonder why Ford doesn't make the info available. Maybe the professional upfitters are privy to this info?

[@michaelmagee679]

In USA, the bolt in above the wheel well is a 7/16"x20.

[@user-zz8rk5mk7t]

Thank you!

[@redhongkong]

i like the factory m8 location, theres like 8-9 of them on each side, so i enlarged all the small holes that im gonna use to house m8 rivet nuts (yes primed and painted them).

[@thepatternforms859]

Which drill bit kit? The steel is hardened with boron!

[@bobstransitvan3053]

Good Information. I think there are enough holes in the Transit that you shouldn't have to drill any new holes. At least, that's my objective.

[@lagunajill]

We actually still had to drill a few holes, and enlarge a few others, to install rivnuts exactly where we needed them. But the pre-drilled holes were a huge help.

[@shaunnasworkshop]

New FTC owner here and I am a total noob... how do the rivnuts not fall out?

[@thepatternforms859]

The rivnut gun when you squeeze the handles together applies a layer of adhesive glue