Went to a specialty bolt shop in town but they had nothing suitable. Seemed like an elegant solution, and an obvious choice.
I went to the McMaster Carr catalog, thinking i would get hex head bolts to slide into the T slot. I want to invert 2 bolts in the T-slot and use 2 thread-through knobs to tighten down the plywood on top of the cast iron table. I want to make an outboard fence for my Powermatic 2700 shaper.