Flat Head Square Recess Self-Drilling Screws With Under-Head Ribs, Three Notches Threads & Wing Point

Our screws are customized composite reinforced industrial-grade precision fasteners, specially developed for high-standard concealed flat assembly and heavy-load anti-displacement hard material drilling scenarios. This product integrates four innovative exclusive structures, completely upgrading the performance defects of ordinary flat head drill Point screws such as insufficient head rigidity, weak thread bite force and poor hard material penetration. Firstly, the integrated under-head reinforcing rib structure adds multi-directional reinforced support at the stress concentration position under the screw head, which greatly improves the overall structural rigidity of the flat head. It can effectively resist high locking pressure and heavy-load extrusion, completely avoiding common problems such as screw head sinking, deformation and lateral displacement during high-strength fastening, realizing permanent anti-displacement positioning effect. Secondly, the upgraded Three Notches special thread structure abandons the traditional single continuous thread design, forming three groups of staggered occlusive thread bite systems. The three-dimensional surrounding bite force makes the combination between the screw and the substrate tighter and more stable, with far higher pull-out resistance and anti-loose performance than ordinary threads, suitable for long-term heavy-load structural fixing. In addition, the professional Wing gradient drill Point adopts a streamlined Wing cutting design, with gradual cutting depth and smooth chip removal. It has stronger hardness and cutting toughness than ordinary straight drill Points, can stably drill through hard plastic, thick wood, thin hard metal plates and composite hard materials, and will not jam, break teeth or wear rapidly during high-intensity drilling. Finally, the precision flat square hole drive head realizes full flush concealed installation, with no protruding parts on the surface after locking, smooth and flat workpiece surface, perfectly meeting the strict flatness and aesthetic requirements of precision equipment assembly and refined decoration concealed installation. With superposition advantages of reinforced anti-displacement structure, high-bite Three Notches threads, high-efficiency Wing drilling and flat concealed installation, this product is a high-end customized solution for high-precision and high-strength industrial fastening projects.

Key Features

- Under-Head Reinforced Rib Structure: Integral forming reinforcing ribs, enhance head rigidity, anti-deformation, anti-sinking and anti-lateral displacement, stable heavy-load positioning.

- Three Notches Occlusive Threads: Three-dimensional staggered bite threads, stronger pull-out resistance and anti-loose performance than ordinary threads, firm substrate fitting.

- Wing Drill Point: Streamlined Wing cutting design, smooth chip removal, strong hard material penetration, anti-jam and anti-tooth-break, durable drilling performance.

- Flat Square Hole Concealed Head: Precision flat head structure, flush installation without protrusion, smooth workpiece surface, high aesthetic and flatness.

- Multi-Structure Composite Reinforcement: Four-core innovative structure superposition, comprehensive upgrade of strength, stability and penetration, breaking ordinary screw performance limitations.

- Wide Hard Material Adaptability: Stable drilling and fastening for hard plastic, thick wood, composite plates and thin hard metal profiles, wide application range.

Applications

- High-precision equipment flat concealed assembly projects

- Heavy-load structural anti-displacement stable fixing

- Hard material and thick plate high-strength drilling fastening

- Refined decoration flush flat surface installation scenarios

- Industrial high-stability anti-loose structural connection