Source of Course Threaded Rod for Jacks

[TechWise]

I am looking for some course threaded rod to make some bespoke trailer jacks, preferably trapezoidal thread around 16mm diameter, 500mm long with matching nuts. Most of what I can find is precision machined stuff for CNC leadscrew applications but clearly I don't need that level of precision for a simple jack.

@MrNoo kindly suggested I ask in this sub-forum as this sort of thing is used for depth wheel adjusters and cross shaft adjusters so you folks might know a cheap source.

 

[Pennine Ploughing]

The threaded bar and nut out of a artic trailer jack leg is bit heavy but will do