I recreated the Nut and Bolt for the black and decker children's work bench so that my son had more of these to use.
They match the original size and are compatible with the original Nut and Bolts.
I printed with standard settings with 0.4 nozzle at .2 layer height.
They can be printed up right or on the side. If printer upright due to layerheight the threads will be ridged but doesn't impact usability and no supports required. If printed on its side will need supports and a small amount of post processing on the threads.
The author marked this model as their own original creation.