S-91304A171 M12 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
- Superior corrosion resistance with blue-dyed zinc plating that provides lasting protection in harsh industrial environments
- Exceptional load-bearing capacity thanks to Class 10.9 strength rating and 120,000 psi tensile strength for demanding applications
- Optimized torque transfer through 8mm hex drive design that prevents stripping and ensures secure fastening
- Reliable thread engagement with fully threaded M12 coarse pitch (1.75mm) for faster installation and superior holding power
- Precision flush mounting with standard 90° countersink angle and flat head profile for seamless surface integration
- Consistent performance guaranteed by Rockwell C32 hardness and Class 6g thread fit for dimensional accuracy
- Global compliance assurance meeting DIN 7991/ISO 10642 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These Class 10.9 metric flat head screws deliver critical engineering solutions where high tensile strength and corrosion resistance are paramount. The blue-dyed zinc-plated alloy steel construction withstands aggressive environments while maintaining structural integrity under extreme loads. The fully threaded M12 coarse pitch design ensures rapid installation in production lines and provides maximum thread contact for vibration-resistant connections. With their 8mm hex drive and standard flat head profile, these screws offer superior torque transmission for machinery assembly, automotive components, and heavy equipment manufacturing. The combination of 120,000 psi tensile strength and Rockwell C32 hardness makes them ideal for applications requiring repeated disassembly without performance degradation.
Specification Summary & Compliance
Manufactured to precise Class 6g thread fit tolerances with M12 x 1.75mm coarse thread specifications. These fully threaded metric screws comply with DIN 7991/ISO 10642 manufacturing standards and maintain 20mm length accuracy. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use across global industrial markets.
