Huntindog wrote:
As already said, we don't know what you have been looking at.
I will say that there are different grades of steel. I have even seen some shanks that appear to be cast. They tend to be cheaper.
I do not know if any of this applies to the ones you have been looking at, but it at least gives you some questions to ask about the materials used, so you can decide if that is the reason for the price differences.
As per my previous post, all the shanks are made by the major manufacturers and are of similar size and construction. Even if I provided specific items, no one would be able to decern the differences from a picture or manufacturers data.
The steel is of no consequence as even the lowest grade of steel including cast steel would have a tensile and shear strength of over 100,000# for a 2x2 bar. The suspect items could be weld quality or or possibly fatigue failure. Fatigue failure is not likely as the bar is only subject to a very small percent of its 100,000# capacity.
Now given the above information, does anyone have an answer?