Outdoor T-Nuts For Home Wall

I am planning on beginning construction on an outdoor bouldering wall, and I have been looking at different T-Nuts to get. At first I was considering the Escape Climbing T-Nuts on amazon, but in the reviews multiple people said they rusted very easy despite the fact that they are stainless steal. Does anybody have any recommendations for weather-proof outdoor T-Nuts that are for a decent price? I need about 200. 

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I just looked at the Escape Climbing inventory on amazon.com, and didn't see any stainless steel nuts. Bolts, yes, but the nuts are all zinc plated.

Sorry for the confusion. Must have been a different company.

Hank D wrote: I am planning on beginning construction on an outdoor bouldering wall, and I have been looking at different T-Nuts to get. At first I was considering the Escape Climbing T-Nuts on amazon, but in the reviews multiple people said they rusted very easy despite the fact that they are stainless steal. Does anybody have any recommendations for weather-proof outdoor T-Nuts that are for a decent price? I need about 200. 

get screw on zinc tnuts and if they rust at all you can swap them out... zinc coating is supposed to hold up moisture. not like stainless but way cheaper.. 

I am now looking at the Element Climbing 4-prong t-nuts. Anybody got any experience with these on an outdoor wall? I want to try to avoid having to swap them out for as long as possible, plus I'd glue them in to the plywood.