S-91304A103 M3 x 12 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 10.9 alloy steel construction, providing reliable performance in demanding industrial environments
• Superior corrosion resistance from blue-dyed zinc plating, extending service life and maintaining appearance in harsh conditions
• High tensile strength rating of 120,000 psi ensures secure fastening under heavy loads and vibration
• Precision hex drive design with 2mm drive size allows for efficient installation and removal with standard tools
• Optimized thread engagement with coarse M3 x 0.5mm threading and Class 6g fit for quick assembly and reliable holding power
• Consistent flush mounting with standard flat head profile and 90° countersink angle for smooth surface finishes
• Full regulatory compliance with RoHS 3 and REACH standards, ensuring environmental and safety requirements are met

Professional Applications & Engineering Value

These M3 flat head screws deliver exceptional engineering value through their Class 10.9 alloy steel composition and blue-dyed zinc plating surface treatment. The combination of Rockwell C32 hardness and 120,000 psi tensile strength provides reliable performance in high-stress applications where vibration resistance and load-bearing capacity are critical. The fully threaded design with coarse pitch metric threading ensures rapid installation and superior holding power in materials ranging from metals to engineered plastics. The hex drive configuration with 2mm drive size facilitates efficient assembly in confined spaces, while the standard flat head profile creates seamless finishes in countersunk applications. These fasteners are particularly valuable in industrial machinery, automotive components, and electronic enclosures where DIN 7991/ISO 10642 compliance is required for quality assurance.

Specification Summary & Compliance

This metric flat head screw features precise M3 x 0.5mm coarse threading with Class 6g thread fit tolerance for consistent performance. Manufacturing adheres to DIN 7991 and ISO 10642 standards for dimensional accuracy and quality control. The fastener maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial applications. With a standardized 90° countersink angle and 12mm length, these screws provide reliable fastening solutions while meeting international quality and safety requirements.