1/4 inch bolt for Vive Tracker mount

1/4 inch bolts seem to be hard to come by. I made this specifically to be able to attach a Vive Tracker to a custom mount. It's 13 mm + head.
While I wouldn't trust it with a 1000$ DSLR, it holds together quite well and is suitable for rapid prototyping. Use at your own risk.
Can be screwed with either a 5/32 Allen key or 10mm fixed key.

bolt_v2 features a slit so that a screwdriver or small coin can be used to fasten it. I found that PLA may be too soft for such a small Allen key.