[sanddrag]

I checked McMaster, MSC, Small Parts, PIC, Berg, Boston, and a couple others and nobody seems to have what you want. The only thing close is a 1/8" face gear, and I'm assuming you want wider hence the need for the long length.

There's a free DOS program called Geargen which will make you a dxf of a gear that is supposedly good enough to burn it from.

Let us know what exactly you are trying to do, and maybe we can figure out some sort of alternative.