Are non-standard screws more prone to brittle fracture with higher grades?

Not necessarily, there are still many different situations. The materials, hardness, and uses used in the production of each non-standard screw are different. After normal starting and grinding, different heat treatments need to be carried out according to the different materials and product grades. There are ordinary hardened, carburized, and vacuum hardened screws, but the hardened screws require subsequent treatment according to different electroplating requirements. For example, for galvanized or nickel plated screws, it is necessary to control the dehydrogenation treatment of the screws as much as possible after two hours of hardening, and the duration and temperature of dehydrogenation are also critical. As long as the hardening and subsequent electroplating processes are done well, the higher the grade of non-standard screws, the more likely they are to break.