MH had three tables, one for the slots, one for the bolts, and one for the nuts. Those two facts are why I say that it seems to be a non standard standard. It was easier to buy them than to alter the ones that were provided. I had to purchase extra Tee nuts for my 1/2' clamping set because the 'standard' ones would not fit the slots on my mill.

I know that Enco lists quite a number of Tee nuts, many of them differ in only minor ways, but they are apparently necessary. I guess the nut would be similar to the bolt. The nut size table starts with the 0.312' / 8mm size. Strangely, there are no numbers for the Tee nut itself, just the slot and bolt. That 'Width across corners' dimension is not referenced in the figure so I am not completely sure what it is. There are some more numbers for rounding or breaking the corners.Īcross the flats of the Tee: 0.469' - 0.438' / 13mm - 12mm Height of bottom of the slot: 0.203' - 0.234' / 7mm - 8mm I looked in Edition 36 of MH and it says it is the 1985 standard, revised in 1988.įor 1/4' / 6mm size Tee slot it gives the following.

Make a t slot bolt