S-98093A212 M5 x 25 mm ISO 898-1, DIN 6921 High-Strength Metric Class 10.9 Steel Flanged Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black-phosphate steel coating, extending service life in harsh industrial environments
• Exceptional mechanical strength with Class 10.9 rating and 150,000 psi tensile strength for high-stress applications
• Enhanced load distribution through integrated DIN 6921 flange, reducing surface pressure and preventing loosening
• Optimized thread engagement with M5x0.8mm coarse pitch and partial threading for faster assembly and secure fastening
• Reliable torque transmission via external hex drive design, ensuring consistent clamping force during installation
• Precision manufacturing with Class 6g thread fit and Rockwell C32 hardness for dimensional accuracy and wear resistance
• Broad compliance coverage meeting ISO 898-1, RoHS 3, and REACH standards for global industrial applications

Professional Applications & Engineering Value

Engineered for demanding industrial fastening applications, these M5 hex head screws deliver critical performance advantages through their black-phosphate steel construction and DIN 6921 flange design. The Class 10.9 strength rating ensures reliable performance in high-vibration environments such as machinery assembly, automotive components, and structural frameworks. The partially threaded configuration with coarse pitch metric threading provides superior resistance to vibrational loosening while enabling rapid installation. The integrated flange eliminates the need for separate washers, reducing assembly time and component count. This combination of high tensile strength (150,000 psi) and corrosion-resistant surface treatment makes these metric screws ideal for outdoor equipment, manufacturing fixtures, and heavy-duty industrial applications where durability and reliability are paramount.

Specification Summary & Compliance

Manufactured to precise metric dimensions with M5x0.8mm coarse thread and Class 6g thread fit tolerance. Complies with ISO 898-1 mechanical properties standard for Class 10.9 strength grade fasteners. Features 25mm length with 16mm minimum thread length and 11.8mm flange diameter. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements for environmental safety and regulatory acceptance in industrial markets worldwide.