Jules Borel's site is generally pretty good for looking up parts equivalents and to identify the base or most common movement in a series.
In this case however, the part you want is not listed against that movement... however they do list the minute cock, and by clicking this you can see all the other movements this part is used on. It is a fair bet that the same screws are used to hold it in place on the other movements:
http://cgi.julesborel.com/cgi-bin/matcgi2?ref=Xb\D]
I can't see the individual screw listed in any of my usual haunts, so you may be best buying a scrap movement from the same series. This may seem like a slightly more expensive solution, but you could spend a long time looking otherwise. For example:
http://www.ebay.co.uk/itm/Monte-Swiss-ETA-1080-watch-movement-dial-running-/231964492855?hash=item3602294437:g:MI8AAOSwrhlXTzcm