1. Product Name & Standard Official Name: Coupler Concrete Self-Tapping Anchor Bolt Standard: General concrete self-tapping anchor screw for ceiling anchoring 2. Structural Features Adopts internal hex socket flange head with flat bearing face for uniform pressure distribution. Internal hex socket drive for convenient socket wrench installation, especially suitable for overhead ceiling works. Full-thread shank with special coarse self-cutting thread and sharp self-tapping tip. 3. Material & Strength Grade Main material: Carbon steel. Stainless steel available on request. Heat-treated to achieve high tensile and shear strength for reliable load-bearing anchoring. 4. Surface Treatment Common finishes: electro-galvanizing, hot-dip galvanizing, mechanical galvanizing, Dacromet, Geomet, phosphating. Custom anti-corrosion coating optional. Electro-galvanized finish is the standard option for indoor ceiling projects. 5. Key Advantages - Internal hex socket drive enables fast and steady socket installation, ideal for overhead ceiling mounting operations. - Flange head provides enlarged bearing surface to disperse pressure and prevent loosening under vibration. - Special self-cutting thread taps directly into concrete without pre-expansion sleeve, greatly improving installation efficiency. - Full-thread structure delivers strong pull-out resistance and stable long-term anchoring performance. 6. Application Scenarios Extensively used for ceiling suspension systems, ceiling keel fixing, concrete ceiling anchoring, light steel joist installation, masonry fixing and general interior concrete anchoring jobs.