I just received a Flatcap XS that was added as a sweetener to a listing for a Nait XS3. The price I paid was a fair one for just the Nait. The Flatcap was purely a bonus.
I heard something rattling around inside so opened it up and found this screw
It looks like it’s supposed to go through that silver colored part and connect into a shallow socket on the underside of the casework to help hold it in place. However, I don’t see how you could actually screw it in because the casework would almost be fully shut for the screw to line up with the socket.
Put it in a tiny grip seal bag, tape it inside the case, and when you or someone in the future gets it serviced, I’m sure it will get put back where it’s supposed to go.
Could it be an Earth Bonding screw…? Naim have used them in the past. Several of my Olive units have them, screwed thru the outer sleeve, into the tray.
I believe that is correct. I bought a Flatcap2 years ago and when it arrived you could hear something rolling around in it. When I opened up the case you could see the screw and washer
If I remember correctly you put the screw loosely in place then slide it into the bracket then tighten with a long screwdriver through the hole in the bottom.
As others have indicated here, it appears to be the part of the screw that locates the centre-front of the case lid. The Magnesium Zinc is relatively soft so the screw just bites into that. Be careful though. If you over-tighten then you can actually end up dimpling the case top.