S-97478A133 M20 x 50 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
- Superior corrosion resistance from hot-dipped galvanized steel coating, ensuring long-term reliability in harsh industrial environments.
- Exceptional tensile strength of 150,000 psi and Class 10.9 rating for reliable performance in high-stress, heavy-duty applications.
- Optimized load distribution with a 32mm hex head and external hex drive, providing secure, high-torque installation and removal.
- Enhanced vibration resistance through coarse threading (2.5mm pitch) and Class 6g thread fit, minimizing loosening in dynamic settings.
- Controlled clamping force with 19mm grip length and partial threading, reducing the risk of thread stripping in assembled components.
- Consistent dimensional accuracy per DIN 6914/ISO 7412 standards, ensuring interchangeability and ease of replacement.
- Compliance with RoHS 3 and REACH regulations for safe, environmentally responsible use across global markets.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this M20 hex head screw delivers robust performance in structural steelwork, heavy machinery, and construction assemblies. The hot-dipped galvanized steel material provides a durable barrier against moisture, chemicals, and UV exposure, addressing common corrosion-related failures. With a Class 10.9 strength grade and Rockwell C32 hardness, it withstands extreme tensile and shear loads, while the coarse metric thread and partial threading design enhance grip stability in thick materials. Ideal for bolting connections in frameworks, conveyor systems, and outdoor installations, this DIN 6914/ISO 7412 compliant fastener ensures precision fit and long-term operational safety.
Specification Summary & Compliance
This hex head screw features a metric M20x2.5 coarse thread with Class 6g thread fit tolerance, ensuring precise engagement. It adheres to DIN 6914 and ISO 7412 manufacturing specifications for dimensional consistency and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances. With a total length of 50mm and partial threading over 31mm, it meets rigorous industrial standards for reliability and safety.
