Watch Band Replacement Parts

So I was looking at one of my watches and noticed that a screw had fallen out of one the pins connecting the bracelet to the watch face. I contacted the watch manufacturer's customer service department to ask about a replacement part. I also did a quick search and found www.esslinger.com and have sent them an inquiry to see if they carry this screw. Does anyone know of any other retailers that sell a replacement screw for this pin?

Otto Frei might be worth a look?

I took a look on Otto Frei but couldn't find the part I needed. That's ok because I got a reply from Esslinger.com and was able to find it there. The part is called a Panerai style screw bar. The picture below is taken from this page.