S-90373A124 M12 x 40 mm ISO 4017, DIN 933 Extreme-Strength Metric Class12.9 Steel Hex Head Screws
Extreme-Strength Metric Class12.9 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
- Maximum load-bearing capability with Class 12.9 strength rating and 170,000 psi tensile strength for critical structural applications
- Superior torque transmission and installation efficiency through external hex drive design and 19mm head width
- Enhanced durability and wear resistance with Rockwell C39 hardness steel construction
- Reliable fastening in demanding environments with fully threaded M12 coarse thread (1.75mm pitch) design
- Precise fit and interchangeability ensured by Class 6g thread fit and ISO 4017 compliance
- Environmental and regulatory compliance meeting RoHS 3 and REACH standards for global industrial use
- Versatile 40mm length providing optimal engagement for various material thicknesses
Professional Applications & Engineering Value
These M12 hex head screws deliver exceptional engineering value in heavy-duty applications where failure is not an option. The Class 12.9 strength grade and 170,000 psi tensile strength make them ideal for structural steel connections, heavy machinery assembly, and automotive components subjected to extreme vibrations and dynamic loads. The fully threaded metric coarse design with 1.75mm pitch ensures maximum thread engagement and resistance to loosening, while the external hex drive provides superior torque transmission during installation. Manufactured from high-grade steel with Rockwell C39 hardness, these fasteners maintain integrity under repeated stress cycles, making them perfect for industrial maintenance, construction projects, and manufacturing equipment where reliability is paramount.
Specification Summary & Compliance
This hex head screw features precise Class 6g thread fit tolerance and complies with ISO 4017 specifications (equivalent to DIN 933). The fastener meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance for international industrial markets. With right-hand metric coarse threading and fully threaded design, it maintains consistent performance across demanding applications while adhering to global quality standards.
