Workmate pivot nut WM301

The block which hold the top jaws onto a B&D Workmate is called a Pivot Block and eventually the thread gets striped meaning the jaws no longer hold.
rtrivet's version didn't work on my WM301 as it's too short so the block came off the end of the adjusting screw every time the jaws were opened fully. Thankfully his description listed the unusual thread used on that rod so I was able to design my own version and here it is.
The yellow one is a trial version, with the original B&D part next to it for comparison. The finished product is of course printed in sophisticated black