S-91263A939 M12 x 40 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 tensile strength of 120,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
- Superior corrosion resistance from zinc plating protects against rust and degradation in harsh industrial environments, extending service life.
- High hardness rating (Rockwell C32) provides excellent wear resistance, maintaining thread integrity through repeated use.
- Precision Class 6g thread fit with coarse 1.75mm pitch enables quick installation and secure fastening in various materials.
- 8mm hex drive design offers easy torque application with standard tools, minimizing installation time and effort.
- Full threading along the 40mm length ensures maximum grip and uniform stress distribution for stable assemblies.
- Compliance with DIN 7991 and environmental standards guarantees consistent quality and safe use in regulated industries.
Professional Applications & Engineering Value
Engineered for demanding industrial applications, these M12 flat head screws address critical challenges in machinery assembly, structural frameworks, and heavy equipment. The zinc-plated alloy steel construction combats corrosion in outdoor or humid settings, while the Class 10.9 strength grade handles dynamic loads without deformation. The coarse thread spacing and fully threaded design facilitate rapid insertion into metals or composites, reducing labor costs. With a 90° countersink angle and flat head profile, they provide flush mounting for streamlined surfaces, ideal for automotive, construction, and manufacturing sectors where reliability and compliance with DIN 7991 are paramount.
Specification Summary & Compliance
This metric screw features precise Class 6g thread fit and M12 x 1.75mm coarse spacing per ISO standards, ensuring dimensional accuracy. Manufactured to DIN 7991 specifications, it meets rigorous mechanical and tolerance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its safety for environmental and health standards in global markets.
