S-91304A125 M5 x 20 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat 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 load-bearing capacity with 120,000 psi tensile strength, ideal for high-stress industrial applications
- Superior corrosion resistance from blue-dyed zinc plating, extending service life in demanding environments
- Precise Class 6g thread fit ensures smooth installation and reliable engagement in mating components
- Optimized hex drive design with 3mm drive size prevents cam-out and enables high-torque installation
- Full threading along 20mm length provides maximum grip and uniform stress distribution
- Class 10.9 strength rating guarantees consistent performance in critical mechanical assemblies
- Standard 90° countersink angle enables flush mounting for clean, professional finishes
Professional Applications & Engineering Value
These M5 flat head screws deliver exceptional engineering value for heavy-duty industrial applications where vibration resistance and structural integrity are paramount. The Class 10.9 alloy steel construction combined with Rockwell C32 hardness provides reliable performance in machinery, automotive assemblies, and structural frameworks subject to dynamic loads. The blue-dyed zinc plating offers both corrosion protection and visual identification benefits, while the coarse M5 x 0.8mm threading ensures rapid installation and secure fastening in various materials. The fully threaded design maximizes pull-out resistance, making these metric screws ideal for applications requiring consistent clamping force across the entire fastener length.
Specification Summary & Compliance
Manufactured to DIN 7991/ISO 10642 standards with Class 6g thread tolerance for precision fit. The M5 x 0.8mm coarse thread configuration ensures compatibility with standard metric components. These flat head screws feature a standard 90° countersink angle and are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial fasteners.
