Belly pan fasteners?

[Allgonquin]

I just bought a 2012 XC70, and we are putting my 2004 XC70 with 290K miles out to pasture. The 2012 came without a belly pan. I've since acquired an aftermarket belly pan (hopefully it fits well) but I'm wondering what the stock fasteners are? Looking at the underneath, I can see some holes with what appears to be red plastic in them, with holes in the red plastic. I'm not sure if those are the intended fastener holes.... if so I would think a coarse thread (like a wood screw type thread, but obviously not a wood screw!) fastener would be used, as distinct from an M6 x 10 or similar machine screw. Any info on this would be really appreciated. I didn't spend a lot of time looking but in my brief inspection I did not seems to see any threaded holes, but maybe I missed them. Tia!

[Allgonquin]

Answering my own question for future readers. These fasteners are Volvo part number 998164 "six point socket screw" and hold the belly pan, which is called the "radiator support splash shield". And as I should have known, you can buy a complete set including the red plastic screw inserts, from FCP or IPD or similar suppliers.

[albertj]

You can get a pack of replacement fasteners inexpensively. Ford (the 2012 XC70 is built on Ford's EUCD platform) used those fasteners on a number of vehicles, and their competitors (cough cough BMW and others cough) used them as well. If you go to amazon dot com or aliexpress dot com and search for "Splash pan fasteners volvo." You will find things like this: https://www.amazon.com/Middrivr-Unde...dp/B0CJDTNPG3/ or this: https://www.amazon.com/Xislet-Undert.../dp/B0C65FXL1B. What to do: Get a set of them. I think the tray requires seven. Put the other three in the glove box and tell the service writer or technician working on your car that if they lose a screw or strip an insert there are spares in the glovebox, please use them if needed. Techs and owners tend to strip them, not from malice but rather because they are not threaded in the first place almost no matter how careful you are eventually you will cross-thread at least one each time you R&R the panel. Only way to avoid cross threading that I know of is to turn the screw backwards while lightly pressing in on it and you'll feel it seat properly in the threads that were already cut the first time you screwed it in. THEN screw it in normally. The other thing is, they hold pretty well when just snug -- if you over-tighten them they will strip. Again, with the kit you got three spare sets so just replace.