S-91239A775 M12 x 70 mm ISO 7380 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional durability with Class 10.9 high tensile strength (140,000 psi) for reliable performance under heavy loads
- Superior corrosion resistance thanks to black-oxide coating on alloy steel, extending service life in harsh environments
- Quick and secure installation with hex drive design and coarse 1.75mm pitch threads for faster assembly
- Consistent thread engagement ensured by Class 6g thread fit and full threading along the 70mm length
- Reduced head protrusion with rounded button head profile for cleaner aesthetics and improved safety
- Global compliance assurance meeting ISO 7380 standards and environmental regulations (RoHS 3 & REACH)
- Optimized mechanical properties with Rockwell C32 hardness balancing strength and ductility
Professional Applications & Engineering Value
This M12 metric screw with black-oxide alloy steel construction addresses critical industrial challenges where corrosion resistance and structural integrity are paramount. The fully threaded coarse pitch design ensures rapid installation in heavy machinery, automotive assemblies, and structural frameworks, reducing assembly time while maintaining vibration resistance. Engineers benefit from the Class 10.9 strength grade and ISO 7380 compliance, providing predictable performance in high-stress applications. The rounded head hex screw profile minimizes snagging hazards in confined spaces, while the black-oxide surface treatment protects against oxidation in humid or chemical-exposed environments, making it ideal for manufacturing equipment, construction projects, and transportation systems requiring long-term reliability.
Specification Summary & Compliance
This fastener maintains Class 6g thread fit tolerance per metric standards with M12 x 1.75mm coarse threading and 70mm full thread length. Manufacturing conforms to ISO 7380 specifications for dimensional accuracy and mechanical properties. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives, ensuring safe use in international markets.
