S-91280A017 M18 x 90 mm ISO 4014, DIN 931 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head 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 Tensile Strength – Class 8.8 rating with 110,000 psi tensile strength ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior Corrosion Resistance – Zinc plating provides a durable protective layer, extending service life in harsh or outdoor industrial environments.
- Optimized Thread Design – Coarse M18 x 2.5mm thread with Class 6h fit offers excellent grip and ease of installation, minimizing assembly time and improving joint integrity.
- Robust Material Hardness – Rockwell C21 hardness enhances wear resistance and durability, maintaining fastener integrity under repeated loads.
- Secure External Hex Drive – Hex head design allows for high-torque application with standard tools, ensuring tight, secure fastening in heavy-duty settings.
- Versatile Partially Threaded Shank – 42mm minimum thread length on a 90mm screw provides unthreaded grip area for better clamping force distribution in structural assemblies.
- Global Compliance Assurance – Meets ISO 4014/DIN 931 standards and is RoHS 3 & REACH compliant, ensuring safety and regulatory acceptance in international markets.
Professional Applications & Engineering Value
Engineered for demanding environments, this M18 hex head screw combines Class 8.8 steel strength with a zinc-plated finish to address common industrial challenges like vibration loosening and corrosion. The coarse metric thread (2.5mm pitch) ensures quick assembly and reliable hold in materials such as steel frameworks, machinery bases, and construction equipment, where partial threading helps prevent shear stress concentration. Its external hex drive supports high torque application, making it ideal for heavy-duty fastening in manufacturing, automotive, and infrastructure projects, reducing maintenance needs and enhancing operational safety.
Specification Summary & Compliance
This fastener adheres to precise dimensional standards with a Class 6h thread fit and ISO 4014/DIN 931 specifications, ensuring consistent performance. It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, guaranteeing environmental safety and material integrity for global industrial use.
