S-91304A123 M5 x 12 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

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.
• Class 10.9 strength grade provides superior load-bearing capacity for demanding industrial and structural applications.
• Blue-dyed zinc-plated alloy steel construction offers enhanced corrosion resistance and visual identification for streamlined assembly processes.
• Rockwell C32 hardness delivers excellent wear resistance, maintaining thread integrity through repeated installations.
• 3mm hex drive design enables secure tool engagement and efficient installation with standard industrial tools.
• Fully threaded M5 coarse pitch configuration ensures rapid installation and strong holding power in various materials.
• Standard 90° countersink angle allows for flush mounting in prepared surfaces, creating clean, professional finishes.

Professional Applications & Engineering Value

This Class 10.9 metric flat head screw delivers critical engineering advantages for industrial applications where reliability is paramount. The blue-dyed zinc-plated alloy steel construction addresses common corrosion concerns in manufacturing environments while providing visual identification for quality control. The M5 x 0.8mm coarse threading with Class 6g thread fit ensures consistent engagement in metals, plastics, and composite materials, reducing cross-threading incidents during high-volume assembly. The combination of 120,000 psi tensile strength and Rockwell C32 hardness makes these flat head screws ideal for machinery, equipment frames, and structural components where vibration resistance and long-term fastener integrity are essential. The hex drive system provides superior torque transmission compared to Phillips or slotted drives, minimizing tool slippage and damage in production environments.

Specification Summary & Compliance

This metric flat head screw features precise M5 x 0.8mm coarse threading with Class 6g thread tolerance and 12mm length, manufactured to DIN 7991/ISO 10642 specifications. The fastener maintains dimensional accuracy with standard flat head profile and 90° countersink angle. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards are met for global industrial applications.