M5 knurled knob for router circle jig

I needed a grippy m5 knob for my circle jig. Unfortunately none on thingiverse fit my needs

• easy to print without support (I think support is a waste of resources if avoidable)
• large base to create friction
• some space between surface and knurling to get a better grip
• material beween surface and nut to be clamped between
• (at least a bit) material saving (not unnecessary cavities or volumes)
• durable enough for repeated use

Finally I was able to meet most of my expectations and maybe this thing is useful for you as well even if you are not building my Circle jig for Makita routers.
Bad news is you should use some drops of (super)glue to keep the M5 nut in place permanently.