The company KONEX produces pins, cases and push buttons of many models and sizes for railway wagons. All the pins fulfil the standards and customer´s requests. CNC lathes of the brand DOOSAN are used for the production of pins and cases. Some models then pass through induction hardening to requested values. Afterwards the cataphoresis or different surface finishing is made, depending on the drawing documentation and quantity. For induction hardening of the pins, cases and push buttons company uses their own machine, so is fully responsible for quality. The cementation and hardening of some types of push button are made with cooperations.