You might be surprised to discover they are metric. and available from the manufacturer. Best Wishes In a message dated 3/2/2017 7:02:05 P.M. Central Standard Time, [email protected] writes:
You know the little slots on the side on the chairs back, or seat pan. So you can slide brackets on and screw things to it. I think they are called Slot Nuts. I can find T shaped ones, but I need square or rectangled ones. Anyone know where to buy these? I need like a 1/4 inch thread, about 3/4 wide. Thanks much, Greg

