1) Joint Strength: Determine the required tensile, shear, and torsional torque at the rivet nut's connection point.
2) Thread Size and Friction Coefficient: Mainstream rivet nut products on the market offer threads ranging from M3 to M12, with imperial threads also available. The selection depends on the connection requirements.
The friction coefficient range for nuts should be specified according to internal company specifications.
3) Plate Thickness: Ensure the plate thickness is within the rivet nut's clamping range.
4) Hole Size: Manufacturers specify mating hole dimensions for rivet nuts; refer to the manufacturer's design information.
5) Torque: Torque depends on the rivet nut's shape: round, splined, hexagonal, and square. The torsional resistance of these four shapes increases in descending order.
6) Material Corrosion Resistance: The rivet nut's material type and coating should be selected based on the required corrosion resistance. Try to choose a nut made of the same material as the connecting piece, as different materials may lead to galvanic corrosion.
7) Special requirements, such as low flat heads, large flanges, closed ends, and countersunk holes, are available.
8) Waterproof requirements: The waterproofness of the rivet nut needs to consider the structural waterproofness of the riveted part itself and the waterproofness of the riveted part.