Opening Standard For Rivet Nuts

Flare-in nuts are a type of fastener used to join materials and are often used where quick disassembly and assembly is required. The use of Rivet Nuts requires drilling a hole, and the size and position of the holes have an important impact on the effect of rivet nuts. The following will introduce the standard for opening rivet nuts.

The standard for opening rivet nuts usually consists of the following aspects:

Opening diameter: The opening diameter of the rivet nut should correspond to the outer diameter of the nut. Unlike Self Clinching Nuts, it is generally slightly smaller than the outer diameter of the nut. For nuts of different sizes, the diameter of the opening should also change accordingly. Generally speaking, the tolerance of the opening diameter of the rivet nut should be controlled within ±0.05mm.

Hole depth: The depth of the rivet nut opening should be suitable for the length of the nut, and at the same time, ensure that the nut has enough stretch after installation. Generally speaking, the tolerance of the opening depth of the rivet nut should be controlled within ±0.2mm.

Opening position: The opening position of the rivet nut should be aligned with the corresponding hole position of the material to be connected to ensure that the installation position of the rivet nut is correct. For large structural parts, the opening position of the rivet nut should be accurately measured and marked to ensure the accuracy of the installation.

Hole wall straightness: The hole wall of the rivet nut opening should be straight and smooth to ensure that the nut is not hindered during installation and will not receive additional torque.

It should be noted that the opening standard of rivet nuts can vary according to different usage conditions. For example, when used in high temperature, high pressure, shock and vibration environments, the opening standard may require higher requirements. Therefore, when opening holes for self clinching fasteners, accurate measurement and marking should be carried out according to the actual situation to ensure the installation and use of rivet nuts.