Hey! I have some question about incoming inspection. If I messed up the threads i apologize in advance. Could someone share/tell some details about what we should actually control when it come about screws? I know that the most importatnt is thread size lenght of screw and shaft dia. What about the head ? On the technical drwing I have only the max. dia. I am asking about it because I have racived a new batch of screws from my supplier and the head of it is different than it was in old ones. One was more was more rectangular now it is round, and has a smaller diameter so that it can be seen with the naked eye. However, this does not affect functionality. This is my problem but additionally I would like to talk about how should the proper screw control looks like to satisfy the automotive customer? Does anyone have any experience?