Thoughts?

https://cimg6.ibsrv.net/gimg/www.hdf...52ac64eea8.jpg
https://cimg7.ibsrv.net/gimg/www.hdf...dafcef6ce3.jpg

A bit lower profile, closed end, & more thread engagement.

https://cimg7.ibsrv.net/gimg/www.hdf...c21c29c2a8.jpg
https://cimg1.ibsrv.net/gimg/www.hdf...d6ddd3412c.jpg
https://cimg9.ibsrv.net/gimg/www.hdf...acf5cdd970.jpg

badass!

Very Tidy

https://cimg0.ibsrv.net/gimg/www.hdf...87db779812.jpg
https://cimg1.ibsrv.net/gimg/www.hdf...cea877eec7.jpg

This is what I had envisioned. Titanium nut and washer. 316 axle with .242" wall

https://cimg2.ibsrv.net/gimg/www.hdf...23d36b0c10.jpg

That works. I like it.

I like your move to O.D. threads....Gives the threads much higher load capability. With your .750" diameter axle and internal threads you were looking a very small screw O.D. and a thin wall diameter.

Yeah. The numbers don't lie. The male threaded "nut" would have failed long before reaching proper torque. I'm too used to 17-4PH I guess. 316 is like half as strong.

I considered doing a perimeter spline drive similar to yours (I watch a lot of GT2/3 racing where they use them) but ultimately wanted something smoother.

Happy Friday! I got nuthin' today, so...