S-91263A840 M6 x 25 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 for reliable performance in high-stress applications
- Superior corrosion resistance through zinc plating, extending service life in demanding industrial environments
- Precision thread engagement with Class 6g fit and M6x1 mm coarse thread ensuring secure fastening and vibration resistance
- Optimized drive efficiency featuring 4 mm hex drive for maximum torque transfer and reduced tool slippage
- Enhanced flush mounting capability with 90° countersink angle and standard flat head profile for seamless surface integration
- Controlled thread engagement through partial threading design providing optimal clamping force distribution
- Certified material integrity with Class 10.9 strength grade and Rockwell C32 hardness for consistent mechanical properties
Professional Applications & Engineering Value
These M6 flat head screws deliver critical engineering solutions where high tensile strength and reliable fastening are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for machinery, automotive assemblies, and structural frameworks exposed to harsh operating conditions. The partial threading design prevents over-tightening while maintaining optimal stress distribution across joined components. With Class 10.9 strength rating and 120,000 psi tensile strength, these fasteners withstand extreme mechanical loads in heavy equipment, industrial machinery, and construction applications. The 4 mm hex drive and 90° countersink ensure flush installation in precision assemblies where surface clearance is critical.
Specification Summary & Compliance
Manufactured to DIN 7991/ISO 10642 specifications with Class 6g thread fit tolerance for precision engagement. The metric coarse thread (M6x1 mm) ensures compatibility with standard industrial components. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming adherence to international safety and substance restriction standards. The 18 mm minimum thread length and 25 mm overall length provide consistent dimensional accuracy across production batches.
