Can I crimp a pin terminal with some other tool or device? Or is it absolutely necessary to use a special crimper?


You can press and deform a pin terminal with some other tool, but it cannot be called crimping at all.
No matter that pin terminals are not that much expensive, they are in fact a specific product, that is applied in high-technological devices. In life, 35-50% of all accidents in electricity are caused by the bad quality of connection. Everything matters for a reliable connection- the correct choice of the pin terminals and a correspondent tool for perfect crimping results.