The guys on here have been asking for metric screws for their foreign made engines.  I always recommended the local Ace Hardware Store.  But, now I have a new source at lower prices now.  I ordered some 2-56 and 4-40 screws and blind nuts from a place called   "RTL Fasteners".  This was not the first time and will not be the last as I will be stocking up on metric screws.  Every thing comes in its own little package and at quite a bit of saving over buying just 4 screws.  They ship by UPS so it can be tracked.  I knew when to look for the package.  They can be ordered on line.  They assortment packages and tools for the screws.  Check out the site:   www.rtlfasteners.com  .  Great people.  DOC Holliday