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There are many varieties of bolts, which are decided according to different application needs and environments, the so-called high-strength bolts are a kind of bolts that can withstand greater weight, and there are many differences between such high-strength bolts and general pro...

Standardized fastening coupling with mechanical parts. Standardized fasteners mainly include bolts, studs, screws, set screws, nuts, washers and rivets, etc. Bolt structure type many, the head is mostly hexagonal. Subject to shock, vibration or variable load of the bolt, in or...

1.Physical vapor deposition Physical vapor deposition technology can be used to obtain a certain color oxide film or alloy film on the surface of stainless steel screws. Physical vapor deposition has sputtering coating, vacuum coating, ion plating, ion implantation, etc.. Common...