6mm Knob using Rivet-Nut Insert

6mm Knob using Rivet-Nut Insert, Nut-Sert, or Nut-Cert

I wanted some knobs that matched the blue CF arm.

 https://www.bulletpointmountingsolutions.com/  

Here is my fix.

I used 3D Fuel PRO-PCTG (Cobalt Blue)

https://www.3dfuel.com/products/pro-pctg-cobalt-blue-1-75mm

McMaster-CARR Rivet Nut (QNTY-1)

https://www.mcmaster.com/95105A183/

McMaster_CARR 6mm SS Bolt 30mm Long (QNTY-1)

https://www.mcmaster.com/91287A903/

Added in Optional_RIV-NUT-CAP_v3. This just fills the hole at the end of the RIV-NUT and is purely cosmetic. It is a snap it fit.

Just added a bolt retainer clip. (pictured below). For those times when you are trying to remove or add a device by tightening the ball with the clamshell halves. Takes care of the pesky bolt jumping out to the ground.

Completed and installed parts.

NOTE - Rivet-Nut is used as an insert for this product using a soldering iron at 330 deg C to melt it in. It is not compressed.