S-91263A877 M4 x 50 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 Class 10.9 strength grade and 120,000 PSI tensile strength for reliable performance in demanding applications
- Superior corrosion resistance through zinc-plated alloy steel construction, extending service life in harsh industrial environments
- Precise flush mounting with standard 90° countersink angle and flat head design for seamless surface integration
- Optimized installation efficiency featuring 2.5mm hex drive for secure tool engagement and reduced slipping
- Enhanced thread engagement with coarse 0.7mm pitch and full threading for faster assembly and superior holding power
- Guarded against chemical exposure with RoHS 3 and REACH compliance, ensuring environmental and workplace safety
- Consistent dimensional accuracy maintained through Class 6g thread fit and DIN 7991 specifications
Professional Applications & Engineering Value
Engineered for industrial machinery and heavy equipment assembly, these M4 flat head screws solve critical fastening challenges where vibration resistance and structural integrity are paramount. The zinc-plated alloy steel construction provides essential corrosion protection in manufacturing environments, while the Class 10.9 strength rating ensures reliable performance under high stress conditions. The fully threaded design with coarse 0.7mm pitch delivers superior pull-out resistance in metal-to-metal applications, and the 90° countersink angle creates flush surfaces that prevent snagging in automated systems. These metric screws are particularly valuable in equipment maintenance and production line assembly where durability and compliance with international standards are required.
Specification Summary & Compliance
Manufactured to DIN 7991 specifications with Class 6g thread fit tolerance for precise mating components. The metric thread system features M4 x 0.7mm coarse pitch with right-hand threading and 50mm length. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, alongside Rockwell C32 hardness verification for consistent mechanical properties.
