S-91310A125 M5 x 25 mm ISO 4017, DIN 933 High-Strength Metric Class 10.9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional Tensile Strength: With 150,000 PSI tensile strength, this screw provides superior resistance to breaking under heavy loads, ensuring reliable performance in demanding applications.
• High Hardness for Durability: Rockwell C32 hardness offers excellent wear resistance, reducing the risk of stripping or deformation during installation and use.
• Precision Thread Fit: Class 6g thread fit ensures smooth and secure fastening, minimizing the risk of cross-threading and improving assembly efficiency.
• Robust Material Construction: Made from high-strength steel with a black finish, it provides corrosion resistance and long-lasting service in harsh industrial environments.
• Full Threading for Maximum Grip: Fully threaded design allows for consistent holding power along the entire length, ideal for applications requiring uniform clamping force.
• Standard Compliance Assurance: Meets ISO 4017 (equivalent to DIN 933) standards, ensuring dimensional accuracy and compatibility with metric components for seamless integration.
• Environmental and Safety Compliance: RoHS 3 and REACH compliant, making it safe for use in regulated industries without harmful substances.

Professional Applications & Engineering Value

This M5 hex head screw is engineered to address critical challenges in industrial assembly, where high tensile strength and durability are paramount. The Class 10.9 steel construction, combined with a coarse thread (0.8 mm pitch) and Class 6g fit, ensures reliable fastening in high-vibration environments, such as machinery, automotive systems, and structural frameworks. The fully threaded design provides consistent load distribution, reducing the risk of joint failure, while the external hex drive allows for easy installation with standard tools. By complying with ISO 4017 and environmental regulations like RoHS and REACH, it offers a trustworthy solution for engineers seeking to enhance assembly integrity and meet stringent industry standards.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including a Class 6g thread fit for metric coarse threading (M5 x 0.8 mm) and a length of 25 mm. It conforms to the ISO 4017 standard (equivalent to DIN 933) for hex head screws, ensuring consistent quality and interchangeability. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of restricted hazardous substances for safe industrial use.