S-91280A737 M12 x 90 mm ISO 4014, DIN 931, 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
- Superior corrosion protection with zinc plating for extended service life in harsh industrial environments
- High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration
- Class 8.8 strength grade provides excellent mechanical properties for demanding applications
- Rockwell C21 hardness offers optimal resistance to wear and deformation
- Coarse M12 thread with 1.75mm pitch enables quick installation and superior grip in various materials
- Partially threaded design allows for precise clamping force control and secure joint integrity
- External hex drive with 19mm head facilitates easy installation with standard tools and high torque application
Professional Applications & Engineering Value
This M12 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and zinc plated finish, specifically designed to address common industrial fastening challenges. The metric coarse thread with 1.75mm pitch provides superior engagement in both metal and composite materials, reducing the risk of cross-threading while maintaining high pull-out strength. The partially threaded configuration ensures optimal stress distribution, preventing joint loosening under dynamic loads. With Rockwell C21 hardness and 110,000 psi tensile strength, this external hex drive fastener withstands extreme mechanical stresses in heavy machinery, structural assemblies, and manufacturing equipment, offering reliable performance where vibration resistance and long-term durability are critical.
Specification Summary & Compliance
This hex head screw features precise Class 6h thread fit according to ISO metric standards, ensuring consistent performance and interchangeability. Manufactured to meet ISO 4014 and DIN 931 specifications for dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances. The ISO 898 standard guarantees the mechanical properties and performance reliability of this Class 8.8 steel fastener for professional industrial applications.
