Lost wrench, what size?

[Earsmith]

I lost the small Allen wrench that fits the grub screws for the X/ Y axis. I tried a 5/64 but it didn't fit. Before multiple trips to the hardware store could someone tell me what wrench is the correct size.

Thanks in Advance.

[Hugs]

If you mean these, they are 2mm (0.0787" or 5/64" should have fit):

Those are the only grub/set screws I see on my Rev. E. Everything else is M-series socket head cap screw.

But if you mean these, then as far as I can tell, they're not grub screws...just pins.

rail_grub.PNG (175.6 KiB) Viewed 4315 times

I have two full sets of Wiha precision drivers and nothing fit from 0.050", 0.071mm, 0.089mm/0.9mm (all too small) and 1.3mm is just barely too big.