Nuts, bolts, and washers done up from scratch in a metric STL file. Meant to be interchangeable with standard (not metric) SAE nuts and bolts I had on hand. The bolt is about .4mm smaller diameter than 1/4". And the nut is about .4mm larger, providing a snug fit that can be hand-tightened on either the steel or plastic bolt. I also wanted a Phillips head.
The 7/16" hex heads came out slightly larger than comparable steel ones, when printed. But they are still under 7/16" And they fit in my hex sockets with the expected backlash.
If you are looking for something different or not quite this, try the preexisting Nut, Bolt, Washer and Threaded Rod Factory by mike_mattala . https://www.thingiverse.com/thing:193647
I also made some 24 TPI
https://www.thingiverse.com/thing:4742697
| quarter_inch_x_.75_inch_bolt.stl | 458.9KB | |
| quarter_inch_x_1_inch_bolt.stl | 408.9KB |
