I believe everyone has seen the screws, there are tens of thousands of kinds of screws, I believe that non-standard screws occupy a large part of ordinary screws occupy less.
Ordinary screw processing process: equipped with standard grinding tools and punches, can be made directly with the machine, the processing process is relatively simple, if the mold and punch, then directly on the material can be played out. Then the silk and electroplating, you can leave the factory.
Non-standard flat head screws
Non-standard screw processing process: non-standard screws are a kind of non-standard screws, it appears because some machines or household items used above, "There must be results", the two are inseparable from the link. The processing flow of non-standard screws is not the same as the processing flow of ordinary screws. Because many non-standard screws cannot be directly machined with a screw machine, it must be machined through lathes, machine tools, etc., so the processing flow will be more general than There are many more screws. Of course, after the non-standard screws are machined, the plating method is similar to that of ordinary screws.