For non-standard screws, the screws that do not need to be capped are non-standard screws. They are generally used to fix the wheel and the shaft to prevent them from loosening and shifting or rotating. This kind of non-standard screw fixing method is to use a threaded hole on the circumferential surface of the wheel, and the set screw is pressed against the tapered hole or hole on the shaft through the screw hole. There is also a screw hole in the seam between the wheel and the shaft end, and its role is to prevent the two from shifting. Most of the connections or fixings use cap screws. This screw-connected part generally has a through-hole on the upper part and a screw hole on the lower part, so that only when the screw cap presses against the surface of the workpiece, a pressing force can be generated to fasten the workpiece.
When we go to the market to study it, we will know that we now use more non-standard screws made of these three raw materials. They are carbon steel, stainless steel, and copper. Because of their different characteristics, the non-standard screws made by them will also have different characteristics. The understanding of their raw materials will bring up such and such tips for our use, find the source, the problems and risks are very Well evaded.