There are significant differences between pressure rivet nuts and insert nuts in many aspects. The following is a detailed comparison of the two.
1. Definition and structure
Pressure rivet nuts
Definition: Pressure rivet nuts, also known as rivet nuts and self-fastening nuts, are a type of fastener used for thin plate connections.
Structure: The pressure rivet nut is round in shape, with embossed teeth and guide grooves on one end. The embossed teeth are pressed into the preset holes of the thin plate to cause plastic deformation around the hole, thereby achieving a locking effect.
Insert nuts
Definition: Insert nuts are fasteners that embed an insert with an internal thread and knurling or other patterns on the outside into a plastic or other alloy product to form an effective thread on the main product.
Structure: The insert nut usually has knurling or other patterns on the outside to increase the friction with the plastic or alloy product to ensure that it is firmly fixed in the product.
2. Working principle and installation method
Pressure rivet nut
Working principle: The pressure rivet nut uses external pressure to squeeze its embossed teeth into the preset hole of the thin plate, and plastic deformation occurs around the hole. The deformed object is squeezed into the guide groove, thereby producing a locking effect.
Installation method: Put the pressure rivet nut into the preset hole and use a special riveting tool to rivet it to fix it on the thin plate.
Insert nut
Working principle: The insert nut embeds the insert with internal thread into the plastic or alloy product by heating or cold pressing, forming an effective thread, thereby realizing the connection function.
Installation method: According to the specific process, the insert nut can be inserted into the mold pin before the plastic is injected and fixed before injection (in-mold injection molding), or it can be directly cold pressed into the prefabricated plastic hole after the plastic part is formed (cold pressed insert).
3. Application scenarios and uses
Pressure rivet nut
Application scenario: Pressure rivet nuts are mainly used for the connection of thin plates or sheet metals, such as chassis cabinets, car bodies, etc.
Use: Provide reliable threaded connection, suitable for occasions that need to withstand certain tension and shear force.
Insert nut
Application scenario: Insert nuts are mainly used on plastic products or other alloy products to form effective threads.
Use: Provide threaded connection function for plastic products or alloy products, suitable for occasions where screws or other threaded fasteners need to be connected.
IV. Materials and specifications
Pressure rivet nuts
Material: Pressure rivet nuts are usually made of materials such as free-cutting steel, stainless steel, stainless iron, copper, and aluminum.
Specifications: The specifications of pressure rivet nuts usually range from M2 to M12. There is no unified national standard, and they are generally customized according to customer needs.
Insert nut
Material: The materials of insert nuts are brass, carbon steel, stainless steel, aluminum, etc.
Specifications: The specifications and sizes of insert nuts are determined according to specific application scenarios and customer needs.
There are obvious differences between pressure rivet nuts and insert nuts in terms of definition, structure, working principle and installation method, application scenarios and uses, materials and specifications.