S-91280A897 M20 x 150 mm ISO 4014, DIN 931, SAE J1199, ISO 898 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 load-bearing capacity with Class 8.8 strength grade and 110,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance provided by zinc plating, extending service life in harsh industrial environments
- Optimized thread engagement through coarse 2.5mm pitch design, ensuring faster assembly and reduced cross-threading risks
- Enhanced torque transmission with external hex drive and 30mm head width, allowing for secure tightening with standard tools
- Controlled thread distribution via partially threaded design, providing precise clamping force where needed
- Guaranteed dimensional accuracy with Class 6h thread fit, ensuring consistent performance and interchangeability
- Comprehensive regulatory compliance meeting RoHS 3 and REACH standards for global industrial use
Professional Applications & Engineering Value
This M20 hex head screw delivers critical engineering solutions for heavy-duty industrial applications where structural integrity is paramount. The Class 8.8 steel construction combined with Rockwell C21 hardness provides exceptional resistance to shear forces and vibration loosening in machinery assembly, structural steel connections, and equipment manufacturing. The zinc plated finish offers reliable protection against corrosion in environments exposed to moisture and chemicals. With its partially threaded design and metric coarse threading, this fastener ensures optimal clamp load distribution while simplifying installation in time-sensitive production environments. The external hex drive configuration allows for high-torque application using standard wrenches, making it ideal for maintenance, construction, and manufacturing operations requiring robust, reliable fastening solutions.
Specification Summary & Compliance
Manufactured to precise ISO 4014 and DIN 931 specifications with Class 6h thread fit tolerance ensuring dimensional accuracy. The screw meets SAE J1199 standards and is produced under ISO 898 mechanical properties requirements. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.
