Countersunk Torx countersunk screws ® Socket Head Screws)
1. Head design: Integrated Plum Blossom Sinking Head - a sophisticated design combining elegance and functionality to ensure seamless integration in your projects.
Countersunk: With a precise cone angle of 82° following the ISO 2009 standard, these screws become perfectly flush with the surface, making them ideal for applications demanding superior flatness like furniture panels and electronic device casings.
• Plum blossom trough (Torx) ®/ Star groove: A cutting-edge hexagonal star groove design enabling remarkably high torque transmission via specialized batch heads (T15-T30 specifications). This innovation boosts anti-slip properties by over 70% compared to cross grooves, making it a top choice for rapid electric tool installations (recommended speed ≤ 3000RPM).
2. Thread and stem characteristics - designed to meet the rigorous demands of today's construction and manufacturing sectors.
• Thread type: Crafted for versatility and reliability.
Self tapping thread (ST series): Features a cutting edge at the tip for effortless penetration into cork or thin metal plates (up to 3mm, such as aluminum alloys), eliminating the need for pre-drilling.
Machine thread (M series): Requires pre-drilled holes and nuts, perfectly suited for high-load scenarios like steel structure connections, offering unmatched strength and stability.
• Rod material and coating: Engineered for durability and environmental resilience.
Carbon steel (10B21/45 # steel): Post heat treatment, it achieves a hardness of HRC38-42, ideal for indoor applications under conventional loads.
Stainless steel (304/316): Boasts excellent corrosion resistance, making it the perfect choice for outdoor or high-humidity environments, such as marine equipment and swimming pool accessories.
• Surface coating: Designed to extend the lifespan of your constructions.
Galvanized (blue white/color zinc): Withstands salt spray for ≥ 72 hours, meeting general industrial rust-prevention standards with ease.
Dakro: Offers exceptional protection with salt spray resistance for ≥ 500 hours, ideal for coastal or chemically aggressive environments.
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