High-strength bolts that are active in construction such as steel frames and bridges.
"Hot-dip galvanized high-strength bolts" are bolts used for construction machinery. High-strength hex bolts (M12 to M30), which are active in steel frame and bridge construction, are also one of the main products. The use of special steel materials for high-strength hex bolts, such as low-carbon manganese, chromium, and boron steel, ensures stable mechanical properties of the products. We have a rich inventory of standard products and will respond quickly to your orders. 【Features】 ○ Utilizing state-of-the-art equipment for bolt forming (φ27mm or less) for consistent production, ensuring stable quality. ○ Leveraging years of experience in hot forging technology, we also manufacture large-diameter high-strength hex bolts (M33 to M76). ○ Mass production of products with stable quality through strict lot management (based on JIS B1186). *For urgent or emergency inquiries, please contact us through our website for technical questions.
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basic information
【Mechanical Properties】 ■Bolts ○Yield Strength: 640 N/mm² or higher ○Tensile Strength: 800–1,000 N/mm² ○Elongation: 16% or higher ○Reduction of Area: 45% or higher ○Hardness: HRC 18–31 ○Tensile Load (minimum) kN M12/16/20/22/24/27/30 →68/126/196/243/283/368/449 ■Washers ○Grade: F35 ○Hardness: 25–45 HRC ■Nuts ○Grade: F10 ○Hardness: Minimum: 16 HRC, Maximum: 35 HRC ○Guaranteed Load (kN): Same as the minimum tensile load of the bolt product ●For more details, please contact us or download the catalog.
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The fusion of ancient traditional techniques and modern new technologies. Believing that "years of experience lead to great creativity," we adopt the slogan "We want to fit the next needs" and aspire to advance as a company capable of creation, production, and research. Your information, suggestions, questions, and requests will guide us toward further growth. We aim to be a company that thinks and creates together with our customers, so please feel free to contact us with anything.