Upgrading Ryzen and cooler; missing a cooler screw.

[simonpreston]

I'm upgrading my Ryzen 1700 to a 3800X (Asus Prime 370x Pro motherboard). The 3800X has a different cooler style, to the 1700 (clips, rather than the push ins), which require the mounting brackets (proper technical term??) to be on the motherboard.
I removed these, to install the Spire cooler for the 1700, and kept the mounts and screws in the motherboard box. However, in typical fashion, one of the screws has gone missing.

So, that preamble out the way, anybody know what size/kind of screw I need to replace it?

[simonpreston]

Nevermind. I've bizarrely just found it sitting on a shelf. A shelf that has been regularly cleaned and repurposed many times, in the 2.5 years since I built the system, initially. There was no reason for it to be there, but there it was. The stars just seemed to align for me.

How very weird. But a satisfying conclusion.

[Xlucine]

The included screws for my asus MB are #6 UNC for some reason (32 TPI and .134" major diameter which is close enough) - I was expecting metric, but it's much too coarse for that (0.775 mm pitch, whereas M3.5 coarse is 0.6 mm). The head is just under 8mm dia, and the threaded portion is 10mm long

[simonpreston]

Thank you. Useful information, should anyone else lose these screws.