S-90373A129 M14 x 40 mm ISO 4017, DIN 933 Extreme-Strength Metric Class12.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capability with Class 12.9 strength rating and 170,000 psi tensile strength for critical heavy-duty applications
• Superior wear and deformation resistance due to Rockwell C39 hardness, extending service life in demanding environments
• Efficient installation and removal with external hex drive and 22mm head width, compatible with standard tools
• Reliable coarse thread engagement with M14 x 2mm pitch and Class 6g fit, reducing cross-threading risks in industrial assembly
• Full-length threading versatility providing consistent clamping force along the entire 40mm length
• Compliance with international standards including ISO 4017/DIN 933, ensuring interchangeability and quality consistency
• Environmentally responsible manufacturing meeting RoHS 3 and REACH compliance for global supply chain requirements

Professional Applications & Engineering Value

These M14 hex head screws deliver exceptional engineering value in heavy-duty industrial applications where failure is not an option. The Class 12.9 steel construction provides the highest commercially available strength grade, making them ideal for structural steel connections, heavy machinery assembly, and construction frameworks subjected to dynamic loads and vibration. The metric coarse thread with 2mm pitch ensures rapid installation while maintaining superior resistance to loosening under stress. With fully threaded design and external hex drive, these fasteners offer uniform stress distribution and tool accessibility in confined spaces. The combination of 170,000 psi tensile strength and Rockwell C39 hardness addresses common failure points in industrial equipment, providing reliable performance in automotive manufacturing, plant machinery, and infrastructure projects where durability and safety are paramount.

Specification Summary & Compliance

This M14 hex head screw features precise Class 6g thread fit according to ISO metric standards, ensuring proper engagement with mating components. The fastener maintains dimensional compliance with ISO 4017 specification (equivalent to DIN 933) for hex head screws, guaranteeing interchangeability across global supply chains. Manufacturing processes adhere to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards, confirming the absence of restricted hazardous substances. The 40mm length and fully threaded configuration provide consistent performance across the entire fastener span, while the right-hand thread direction and coarse thread spacing follow international metric threading conventions for reliable industrial application.