Display Micro Screws Screw Selection and Connection Firmness Guarantee
2026,06,09
Display Micro Screws are core equipment in the field of metal plastic forming. During operation, they are subjected to cyclic tensile forces, impact forces, and vibration loads. The reliability of the connections between various mold components directly affects product accuracy, production efficiency, and operational safety.
Screws, as key fasteners for mold connections, require scientific and reasonable selection to ensure a firm connection.
Display
Micro Screws screws need to withstand complex dynamic loads, and the materials must possess high tensile strength, shear strength, and good impact toughness. Commonly used materials and grades in the industry are as follows:
8.8 grade screws: Base material is 40Cr, quenched and tempered, tensile strength ≥800MPa, suitable for small and medium-sized Display Micro Screws (such as thin plate stretching dies);
10.9 grade screws: Base material is 35CrMo, tensile strength ≥1000MPa, toughness better than 8.8 grade, suitable for medium load dies (such as thick plate stretching dies);
12.9 grade screws: Base material is 42CrMo, tensile strength ≥1200MPa, used for high-strength dies (such as large automotive body panel stretching dies).
Material selection should avoid over-design (increasing costs) or insufficient strength (leading to breakage), and should be judged comprehensively in combination with mold size, load size and working frequency.
