We have dedicated equipment for the connection of small threaded pins, bushings or connectors. Bushings mounted in metal are automatically administered into the device and pressed with adequate pressure. In the case of grounding connectors, they are welded to steel sheets. These connections are durable and aesthetic, can be used to mount the PCB elecctronic modules in enclosures, for detachable connections of two steel elements or for grounding of housings or power supply units.