S-91263A491 M12 x 20 mm DIN 7991 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 strength and reliability with Class 12.9 rating and 170,000 PSI tensile strength, ensuring secure fastening in high-stress applications
- Superior corrosion resistance due to zinc-plated alloy steel construction, extending service life in harsh industrial environments
- High durability and wear resistance from Rockwell C39 hardness, reducing replacement frequency and maintenance costs
- Easy and precise installation with 8mm hex drive and standard flat head profile, allowing for efficient assembly with common tools
- Reliable thread engagement through fully threaded coarse pitch (M12x1.75mm) and Class 5g6g fit, minimizing cross-threading risks
- Broad compatibility and standardization by meeting DIN 7991 specifications, ensuring interchangeability in metric fastener systems
- Environmental and regulatory compliance with RoHS 3 and REACH standards, supporting sustainable and safe industrial operations
Professional Applications & Engineering Value
This M12 flat head hex screw is engineered to address critical challenges in heavy machinery, automotive assemblies, and structural frameworks where vibration resistance and load-bearing capacity are paramount. The zinc-plated alloy steel construction provides a protective barrier against moisture and chemicals, preventing premature failure in demanding environments. Its fully threaded coarse pitch design ensures rapid installation and superior holding power, while the Class 12.9 strength grade and Rockwell C39 hardness deliver consistent performance under extreme tensile and shear stresses. By conforming to DIN 7991 standards, it offers reliable dimensional accuracy and compatibility, making it an ideal choice for engineers seeking durable, high-performance metric fasteners that reduce downtime and enhance operational safety.
Specification Summary & Compliance
This fastener features precise Class 5g6g thread fit per ISO metric standards, ensuring accurate engagement and consistent performance. It complies with DIN 7991 for dimensional and mechanical properties, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial applications without hazardous substances.
