Fasteners Are A Type Of Mechanical Parts Used For Fastening Connections And Are Widely Used

Fasteners include: bolts, studs, screws, nuts, washers, and pins. Locking or seizure often occurs on fasteners made of stainless steel, aluminum alloy and titanium alloy. These metal alloys themselves have anti-corrosion properties. When the surface is damaged, a thin oxide layer will be produced on the metal surface to prevent further rust. When stainless steel fasteners are locked, the pressure and heat generated between the threads will destroy the oxide layer, causing blockage or shearing between the metal threads, resulting in adhesion. When this phenomenon continues to occur, the stainless steel fastener will be completely locked and cannot be removed or continued to be locked. Usually this series of blocking, shearing, adhering and locking actions occurs in just a few seconds. Therefore, only by correctly understanding and using this type of fastener can we prevent this phenomenon.