Heavly knurled Knobs Thumb wheels for Socket head machine screws. currently #8 and #10
i.e. 8/32 all the way to 10/32 any length longer than 15mm press in and your done.

10-32 Knurled Knob (requires a Socket head machine screw to be inserted)
8-32 Knurled Knob (requires a Socket head machine screw to be inserted)
4mm X 0.7 Knurled Knob Threads inside. (I made it tight. scale up as necessary)
(** on my 4mm knob I ran a 4mm tap thru just to clean out any anomalies. its perfect)

As I require Ill add new sizes. as I go along this is why this is a work in progress. enjoy and pay if forward!
The 15mm is how tall they are overall Knurled section is 10mm. Boss is 5mm.