S-91304A124 M5 x 16 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 in high-stress industrial environments, reducing the risk of fastener failure.
• Superior corrosion resistance with blue-dyed zinc plating on alloy steel, extending service life and maintaining appearance in demanding conditions.
• High hardness rating of Rockwell C32 provides excellent wear resistance, maintaining thread integrity through repeated installations.
• Precision coarse threading (M5 x 0.8mm) enables faster installation and better performance in softer materials or where vibration resistance is crucial.
• Standard 90° countersink angle allows for flush mounting in prepared surfaces, creating clean, professional finishes in assembled products.
• Hex drive design with 3mm drive size offers secure tool engagement and higher torque capability compared to slotted drives.
• Full threading along the 16mm length provides maximum grip and holding power throughout the entire fastener engagement.

Professional Applications & Engineering Value

This Class 10.9 metric flat head screw delivers exceptional engineering value through its blue-dyed zinc-plated alloy steel construction, specifically engineered to address common industrial fastening challenges. The combination of high tensile strength and Rockwell C32 hardness makes these M5 screws ideal for machinery, equipment assembly, and structural applications where vibration resistance and long-term reliability are critical. The coarse threading with 0.8mm pitch ensures secure fastening in various materials while the fully threaded design maximizes load distribution. The 90° countersink profile enables seamless integration into precision-machined surfaces, making these hex drive screws particularly valuable in automotive, manufacturing, and electronic enclosure applications where both strength and aesthetic considerations matter.

Specification Summary & Compliance

This fastener maintains Class 6g thread fit tolerance according to metric standards, ensuring precise engagement and consistent performance. Manufacturing and dimensional specifications strictly adhere to DIN 7991/ISO 10642 standards, guaranteeing interchangeability and reliability across applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial components. The Class 10.9 strength rating confirms the screw meets rigorous mechanical property standards for high-strength fasteners in demanding applications.