S-90386A118 M12 x 30 mm DIN 6921 Medium-Strength Metric Class 8.8 Steel Serrated-Flange Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Serrated-Flange 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 resistance with zinc-plated steel construction, extending service life in harsh industrial environments
- Exceptional load-bearing capacity with Class 8.8 strength rating (110,000 psi tensile strength) for heavy-duty applications
- Enhanced stability and vibration resistance through integrated flange design that eliminates need for separate washers
- Precision threading with Class 6g tolerance ensures reliable engagement and consistent clamping force
- Optimized installation efficiency with external hex drive and coarse thread pitch for faster assembly
- Secure locking performance through serrated underside that prevents loosening under dynamic loads
- Full regulatory compliance meeting DIN 6921 standards, RoHS 3 and REACH environmental directives
Professional Applications & Engineering Value
These M12 hex head screws with zinc-plated steel construction deliver critical performance advantages in demanding industrial settings. The fully threaded design with coarse 1.75mm pitch enables rapid installation while maintaining Class 8.8 strength rating for structural integrity. The integrated flange provides superior load distribution, eliminating washer requirements and reducing component count. With external hex drive compatibility, these fasteners offer reliable torque transmission for assembly lines and field maintenance. The serrated locking feature beneath the head prevents rotational loosening in vibrating environments common to automotive, construction, and heavy machinery applications, while the corrosion-resistant plating ensures long-term reliability in exposed conditions.
Specification Summary & Compliance
Manufactured to DIN 6921 specifications with Class 6g thread fit tolerance for precision engagement. The M12 x 1.75mm coarse thread configuration provides optimal performance in standard applications. These 30mm length hex head screws feature 26.6mm flange diameter and Rockwell C22 hardness for consistent mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across international markets.
