The maillard cones are crap in my experience. I had a front hub that ate them for breakfast, then I found a donar hub and it ate those too. I think english threading may be indicated by a line between the threaded portion and the drive side flange of the hub (like early campy)... I say this because I have one that is BSC threaded and has a line. I know that I replaced the axle in my mid to late 1980s hub with a 10mm metric axle and everything threaded on fine. That was a few years ago and I knew a lot less about what I was doing back then and it was pure luck that I found the axle in the bin at the usedLBS and that it all went together smoothly. I was making a fixed wheel at the time... still have that wheel but it's going on a flip bike now.