SO (SOS) self-riveting through-hole nuts are widely used in the inlaying process of metal sheets, control boxes and power cabinets. Its structure is special. When assembling, only the nut column is put into the hole of the metal plate, which is realized by "riveting" operation. It has the following advantages:

1. It realizes the length guarantee of distance range, greatly simplifies the assembly process, and speeds up the production progress of assembly spacing panels and accessories.

2. The back of the sheet metal is completely inlaid, and the head of the nut column and the plane of the sheet metal are smooth at the same time.

3. The raw materials are free-cutting iron or stainless steel.