The need of each construction process is different but what remains the same is the importance of high quality bolts and nuts. The strength of any product very much depends upon the kind of raw material that is used within as well as the tensile strength of its bolts. It is henceforth very much needed that you put in enough effort to look for high quality bolts.
Whether you are using a tapcon screw or just have the ordinary kind of screw, still the fact remains that screws always play the main role in joining things. Nailing and gluing something cold be faster and convenient, however, these two have a permanent time being joined together and there's no other means of restoring its original strength and tolerance on the screwed joints have.