Greetings, long time lurker. First time poster. I have a nice bench that I want to retrofit with an anti-wracking nut / screw thingy that is on Diefenbach ultimate american front vice. I have a pretty good idea how to do it. But I can't find a knurled nut that has an o.d. that is wide enough and an i.d. that is narrow enough. I would like it to be brass if possible and thin. Any ideas? I plan on recessing the nut into the face of the vise so something along the lines of 1 to 2 inches o.d. would be right. Or other ideas? Thanks. Tom