







Detailed Description of Plum Blossom Groove with Ribbed Rolling Flower Screws
A Comprehensive Analysis Centered on Structure, Functionality, Application Scenarios, and Technical Specifications
1. Head Design: Torx®/ Star-Shaped Slot
Function: The hexagonal star-shaped groove design is engineered for exceptional torque transmission through a dedicated plum blossom head, available in T10-T40 specifications. This design significantly minimizes the risk of tooth slippage, enhancing installation efficiency by approximately 30% compared to traditional single or cross-groove designs.
Anti-Slip Design: Featuring anti-slip ribs within the groove, these screws maintain impressive bite stability, even when used with high-speed electric tools (optimal speed ≤ 2500RPM).
2. Thread Structure: Ribbed Knurled Thread
• Rolled Thread: The surface of the thread boasts rolled continuous circular protrusions, or ribs, with 4-6 ribs per inch. Each rib stands at a height of 0.1-0.2mm, substantially enhancing the grip on wood fibers.
• Anti-Loosening Principle: Once the rolled rib embeds into the wood, it establishes a mechanical lock, boosting pull-out resistance by 50%-70% compared to conventional wood screws. This is particularly beneficial in vibration-prone environments like furniture assembly and door or window installations.
3. Rod Material and Surface Treatment
• Material:
Carbon Steel (C1022): Offers a high hardness range of HRC35-40, making it ideal for use in softer woods such as pine and fir.
Stainless Steel (SUS304): Known for its corrosion resistance, this material is perfect for outdoor or humid environments, making it a great choice for garden furniture and bathroom cabinets.
• Surface Treatment:
Galvanized Blue and White Passivation: Withstanding a salt spray test for ≥ 72 hours, this treatment ensures rust prevention, ideal for indoor applications.
Dacromet Coating: Provides robust protection with salt spray resistance ≥ 500 hours, making it highly suitable for coastal regions or areas with industrial pollution.