"Super high strength" 14.9 hex socket bolt & Delta Protect coat
Attention those struggling with insufficient strength of CAP bolts! Super strong CAP bolts! & High corrosion resistance and non-hydrogen embrittlement Delta Protect coat!
A new hexagon socket bolt boasting high strength of "14.9," surpassing the highest JIS strength classification of "12.9," has arrived!! It utilizes high-strength steel with excellent "delayed fracture characteristics," achieving a tensile strength of 1,400 N/mm² while maintaining over 9% elongation!! The adoption of MJ threads (aerospace metric threads) also improves fatigue resistance, and this "super strength" solves issues in maintenance!! Additionally, separately from the above, there is a Delta Protect Coat, an environmentally friendly, chrome-free (no hexavalent or trivalent chromium) non-electrolytic thin film zinc flake coating, which, when applied, enables fastening with ultra-high strength and high corrosion resistance! Please consider this in conjunction!
basic information
**Features** ◎ 14.9 Hex Socket Bolt High Strength: Achieves a tensile strength of 1,400N/mm². Elongation is over 9%, comparable to 10.9 bolts. (0.2% yield strength is 1,260N/mm²) Delayed Fracture Resistance: Uses "KNDS4," a high-strength bolt steel with excellent delayed fracture resistance produced by Kobe Steel, Ltd. Fatigue Resistance: Improved fatigue resistance through the adoption of aerospace "MJ screws." Shape designed to reduce stress concentration for enhanced fatigue resistance. ◎ Delta Protect Coat Hydrogen Embrittlement Prevention: No hydrogen is generated during the coating process, eliminating the risk of hydrogen-induced stress corrosion cracking. High Corrosion Resistance: Passes over 1,000 hours of salt spray testing. Exhibits high corrosion resistance through cathodic sacrificial protection. High Penetration and Uniformity: The low viscosity of the paint minimizes pooling, allowing for uniform coating. The manufacturing plant conducts first-class (4h) gauge management (sampling). **Sizes** Nominal Diameter: M3, M4, M5, M6, M8, M10, M12, M16 (The Delta Protect Coat is available in M6, M8, M10, M12, M16.) The length of the neck varies by nominal diameter, so please feel free to contact us for details.
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Our company is a specialized trading firm that handles a wide range of products related to manufacturing, centered around "screws." We offer not only tools, carts, and standard screw products but also processed and drawing items made of metals, plastics, and harnesses. Additionally, we handle various types of transport robots such as AGVs and AMRs. Since our establishment in 1957, we have been engaged in transactions with many suppliers both domestically and internationally. Our strengths lie in our reliable quality, competitive pricing, and speedy responsiveness. In addition to our headquarters in Tokyo, we have branches in Kawasaki, Tochigi, Shizuoka, Osaka, the Philippines, Vietnam, Shanghai, and Hong Kong, where our sales representatives provide consistent support from quotations to after-sales follow-up. We also have a subsidiary, Tokai Lock Co., Ltd., which specializes in anti-loosening processing for screws. We will provide optimal proposals tailored to your needs, so if you have any issues related to manufacturing, please feel free to contact Koyama Co., Ltd.