https://www.artstation.com/siver/store/javn/sci-fi-detail-bolts-generator

Houdini tool that is used to create sci-fi looking bolts. With parameters I can control the look of model and make the changes I want. It is also possible to just let it fully procedural generator random variations :)
Tool is useful for creating modular models, kitbash models and height/alpha maps.
In my blog on Artstation there is some more information on it.

Gumroad: https://gumroad.com/l/xmCcHR