S-97478A134 M20 x 55 mm DIN 6914, ISO 7412 Metric High-Strength Steel Heavy Hex Head Screws for Structural Applications
Metric High-Strength Steel Heavy Hex Head Screws for Structural Applications
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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 corrosion resistance with hot-dipped galvanized steel coating, ensuring long-term reliability in harsh environments.
- High tensile strength of 150,000 psi and Class 10.9 rating for superior load-bearing capacity in demanding applications.
- Rockwell C32 hardness provides excellent wear resistance and durability under repetitive stress.
- Coarse metric thread (M20x2.5) with Class 6g fit enables quick, secure fastening and reduces cross-threading risks.
- External hex drive and hex head design allows for easy installation and high torque application with standard tools.
- Partially threaded shank with 24 mm grip length ensures precise clamping force distribution and vibration resistance.
- Compliance with DIN 6914/ISO 7412 standards guarantees dimensional accuracy and interoperability in industrial assemblies.
Professional Applications & Engineering Value
Engineered for heavy-duty industrial and construction applications, this M20 hex head screw addresses critical challenges like structural integrity and environmental exposure. The hot-dipped galvanized steel material provides a robust barrier against rust and chemical degradation, making it ideal for outdoor infrastructure, machinery frames, and steel construction. With a metric coarse thread and Class 10.9 strength, it ensures reliable performance under high vibration and dynamic loads, reducing maintenance needs. The partially threaded design and external hex drive facilitate efficient assembly in tight spaces, enhancing productivity while meeting stringent DIN 6914 specifications for consistent quality and safety.
Specification Summary & Compliance
This hex head screw features precise metric thread dimensions (M20x2.5) with a Class 6g thread fit for accurate engagement. It adheres to DIN 6914 and ISO 7412 manufacturing standards, ensuring dimensional consistency and mechanical performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, supporting sustainable and safe usage in global industrial markets.
