S-90386A109 M8 x 25 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
- Exceptional corrosion resistance with zinc-plated steel construction for long-lasting performance in demanding environments
- Superior load distribution through integrated flange design that eliminates the need for separate washers
- High-strength reliability with Class 8.8 rating and 110,000 psi tensile strength for heavy-duty applications
- Optimized torque transmission via external hex drive design that prevents tool slippage during installation
- Secure anti-rotation locking through serrated underside that maintains fastener position under vibration
- Precision threading with Class 6g tolerance and coarse pitch for quick assembly and reliable engagement
- Full regulatory compliance meeting DIN 6921 standards, RoHS 3, and REACH for global project acceptance
Professional Applications & Engineering Value
These M8 hex head screws with zinc-plated steel construction provide critical solutions for industrial assembly challenges. The fully threaded design with metric coarse threading ensures maximum engagement in structural applications, while the integrated flange distributes clamping force evenly to prevent surface damage. The Class 8.8 strength grade delivers reliable performance in high-stress environments including machinery, construction, and heavy equipment. The external hex drive allows for high-torque installation without cam-out, making these DIN 6921 certified fasteners ideal for production lines requiring consistent, repeatable results.
Specification Summary & Compliance
Manufactured to DIN 6921 specifications with Class 6g thread fit tolerance for precision engagement. The M8 x 1.25 mm coarse thread configuration provides optimal performance in general industrial applications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations ensures global acceptance. Mechanical properties include Rockwell C22 hardness and 110,000 psi tensile strength certified to Class 8.8 standards for reliable performance in demanding conditions.
