S-91263A444 M4 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 load-bearing capacity with 170,000 PSI tensile strength and Rockwell C39 hardness for reliable performance in high-stress environments.
- Superior corrosion resistance from zinc-plated alloy steel, extending service life in harsh industrial conditions.
- Precise and secure fastening ensured by Class 5g6g thread fit and fully threaded M4 x 0.7mm coarse pitch design.
- Streamlined installation with 2.5mm hex drive and standard flat head profile for flush, unobtrusive mounting.
- High reliability in demanding applications due to Class 12.9 strength grade, suitable for heavy machinery and structural assemblies.
- Compliance with international standards including DIN 7991, RoHS 3, and REACH, ensuring quality and environmental safety.
- Optimized for industrial use with a 90° countersink angle and 20mm length, providing versatile and robust fastening solutions.
Professional Applications & Engineering Value
This M4 flat head screw is engineered to address critical challenges in industrial assembly, where vibration resistance, high tensile loads, and environmental durability are paramount. The zinc-plated alloy steel construction offers excellent protection against corrosion, making it ideal for automotive, machinery, and outdoor equipment applications. The fully threaded design with coarse pitch ensures rapid installation and superior holding power, while the Class 12.9 strength grade guarantees reliability under extreme stress. By meeting DIN 7991 specifications, it provides consistent performance and interchangeability, reducing downtime and maintenance costs in professional settings.
Specification Summary & Compliance
This screw features a Class 5g6g thread fit for precise dimensional accuracy, with a Metric M4 x 0.7mm coarse thread and 20mm length. It complies with DIN 7991 manufacturing standards and is verified to be RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations.
