







Introducing our Countersunk Torx Countersunk Screws, a part of the acclaimed Socket Head Screws collection, crafted for those who demand nothing but the best.
1. Head Design: Our screws feature an Integrated Plum Blossom Sinking Head, ensuring a seamless and sophisticated finish.
Countersunk: With a precise cone angle of 82°, in compliance with the ISO 2009 standard, our screws sit perfectly flush with the surface. Ideal for applications requiring impeccable flatness, such as elegant furniture panels and sleek electronic device casings.
• Plum Blossom Trough (Torx) ® / Star Groove: Designed with a hexagonal star groove, this innovation achieves unparalleled torque transmission with dedicated batch heads such as the T15-T30 specifications. Experience over 70% enhanced anti-slip capability compared to traditional cross grooves, making it perfect for high-speed electric tool installations (recommended speed ≤ 3000RPM).
2. Thread and Stem Characteristics: The epitome of engineering excellence.
• Thread Type: Tailored for versatility and performance.
Self-Tapping Thread (ST Series): Equipped with a cutting edge at the tip, it effortlessly penetrates cork or thin metal plates (up to 3mm thick aluminum alloys) without the need for pre-drilling. A true time-saver.
Machine Thread (M Series): Designed to work with pre-drilled holes and nuts, making it indispensable for high-load scenarios such as robust steel structure connections.
• Rod Material and Coating: Carefully selected for durability and performance.
Carbon Steel (10B21/45 # Steel): After precision heat treatment, this material achieves an impressive hardness of HRC38-42, making it perfect for indoor conventional loads;
Stainless Steel (304/316): Known for its superior corrosion resistance, it is perfect for outdoor and high humidity environments such as marine equipment or swimming pool accessories;
• Surface Coating: A testament to our commitment to quality.
Galvanized (Blue White/Color Zinc): Offering a salt spray test durability of ≥ 72 hours, it meets and exceeds general industrial rust prevention standards;
Dakro: Withstands salt spray for ≥ 500 hours, making it the ideal choice for coastal or chemically corrosive environments.