Short Guhring video clip showing them using one of their DTMC SP (Part No. 3794) solid carbide thread milling cutters producing CSK blind threaded holes in din AISi9 Aluminium.
Please use this link to see a video demonstration of this tool on YouTube.
The DTMC-SP is a two-fluted drill/thread milling cutter with 45 deg countersinking step and spiral flute, available with or without internal coolant delivery.
For more information or help on Guhring range of tools please use this link to website.