Got some very nice shed plans, poured my concrete foundation, and am now looking at the plans for walls/truss assembly.

The diagram shows the trusses are strengthened by triangular plates at the top, and square plates (with 1 corner cut off for roof angle). I would like to do these in galvanized metal. I have been to Lowes, Menards, and all over the net and cannot find these things!!! Anybody know where to get them? I attached a pic of the truss assembly

I can't tell how large this shed actually is. I would just use plywood, glue and wood screws on both sides.