We're pretty well of the beaten path of Amazon here, but I had a similar need (#1 slotted flat-head brass wood screws) that McMaster-Carr didn't sell a little w

We're pretty well of the beaten path of Amazon here, but I had a similar need (#1 slotted flat-head brass wood screws) that McMaster-Carr didn't sell a little while ago and found them on microfasteners.com. It looks like they stock metric machine screws as well.