Sorry for the delayed response, been out mowing me lawn...LOL

Classic Fasteners - 1/75-77 Grange Rd, Welland SA 5007

https://www.classicfasteners.com.au

Full range of all the old UNC/UNF bolts and screws etc.

I ordered them online and picked them up. All neatly zip locked in separate bags. If you are not in the Adelaide area, they do deliver.