Knurled and hexagonal connector rings allow tools to be used
30 April 2026 
The German connector manufacturer binder has announced that the coupling rings of its moulded, shielded M12 connectors will now offer a combination of knurling and hexagonal geometries, allowing tools such as torque wrenches to be used to assemble the connectors for the first time. Users will thus achieve controlled tightening, and benefit from increased reliability, as well as achieving consistently high assembly quality, especially in applications where defined torque is critical.
Binder says the new designs reflect market demands – in many industrial environments, standardised and traceable assembly processes are becoming essential. By integrating hexagonal shapes, the connectors can be tightened in a controlled manner, meeting common industrial specifications.
At the same time, binder has also enhanced consistency across its portfolio. While the combination of knurled and hexagon geometries is already established for unshielded versions, it has now been extended to shielded M12 connectors, resulting in a uniform design across different variants.
The new designs also offer practical benefits. The combination of knurled and hexagon geometries allows quick manual pre-assembly as well as precise final tightening with tools. Installation processes will therefore be more flexible, and better adapted to varying field requirements.
Typical uses for the connectors include automation technology, sensors and actuators, mechanical engineering, as well as applications where M12 connectors must be installed under defined mechanical conditions – especially where there is a need for high vibration resistance and long-term stability. Here, controlled tightening provides an extra level of safety.
