do you mean 2 x 2-1/4 rectangular? if so, use a length of solid stock that can be slipped inside the tube, Most all solid stock is dimensionally the same as rectangular or round tube outside diminsions so the solid has to be machined down to fit the inside dims. The end of the solid can be bored / tapped to accept the heim.
I drilled holes in the rails,(pic 2) that are welded full to bond the solid to the rail, Like really large spot welds, then the welds are ground smooth for a clean appearance. The lock washer/jamb nuts are actually a low profile stainless steel shurlock. These can be had through Fastenal.
|