Fastener similar to 679 for trunking duct

This is a DIN rail fastener suitable for trunking ducts from the company Kleinhuis. With it, you can securely attach, for example, DIN rails, junction boxes, or other installations within the profile of the ducts. This part is similar to item 679 from Kleinhuis, which is listed in the catalog but unfortunately cannot be found at retailers. And if it can, minimum order quantities always have to be purchased, although usually only a few pieces are needed. That's why I created a suitable part. The version with the two cylinders is intended to hold a DIN rail straight.

I am not experienced in 3D model design and would therefore be grateful for tips on assembling the model.

An M4 nut is required, which is pressed tightly into the opening. The screw is then chosen to the appropriate length. The support can be easily removed from the top of the opening for the nut.