I took the default Bolt Factory bolts and modified them. There are no threads as these are just the heads of the bolts for use in detailing and such.
I optimized the meshes by reducing the poly count of the default object and cleaning up the edges so the bit insets could be beveled nicely.
I also created a straight bit and star bit for each head type.
They are all UV unwrapped as well.
Hope they prove useful.
You're right. Low poly may be a bit of a stretch. Low-ish poly would be more accurate :)
I don't think you can exactly consider all of the -LOW- poly.
but they still ROCK!