Tuning Necessary tools?

the proper place for your question like this, and about screws and fasteners should be in the 👇

https://www.airgunnation.com/forum/accessories/other-parts-accessories-equipment/

as your questions pertain to more aspects about air gunning in general and are not specific to springer repair and tuning and you will get more views and comments there, such as a torque wrench for mounting scopes. hope this helps
 
I've never used one or felt it was necessary.

Thank you very much for this reply. 
There is a time and a place for a torque wrench/screw driver. When a person has gained the experience of where and when to use one. They know when one is needed. 
If you think you need to torque what it is you are working on. And you can afford the appropriate torque driver. Then by all means buy one and use it.