Hey guys,
Here is the link to their site, I ordered them strait from them, good service. The size is on the chart in thousandths of an Inch.
http://www.grandtline.com/model_railroad/augmentables_pages.htm
I ordered sets 15, 127, 128, 162, 108, 153, and 154. It was a life time supply but I would get two or three sets of the wing nuts and lifting eyes (162, 108), they are a mix of sizes so you don#8217;t get a whole lot of each. I think it was all less than $30 shipped.
Later#8230;
Brian