Used 15mm steel spindle, professionally cleaned and then freshly zinc plated.
Maximum overall length is 264mm.
Shaft diameter is 15mm.
Shaft length including thread is approximately 232mm
15mm diameter shaft length is 212mm.
Threaded section is 20mm long.
The shoulder diameter is 22mm and is approximately 32mm long and has a through hole passing through the end of the shaft, see pics.
Only one available.