S-97595A590 M4 x 16 mm DIN 7991 Brass Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from high-quality brass construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness for reliable, long-lasting fastening under load.
• Precise and secure installation ensured by the Class 6g thread fit and fully threaded design, minimizing the risk of loosening or cross-threading.
• Efficient assembly and disassembly with a 2.5 mm hex drive, providing a positive grip for high-torque applications without cam-out.
• Flush and unobtrusive finish thanks to the standard flat head profile and 90° countersink angle, perfect for applications where a smooth surface is critical.
• Guaranteed dimensional consistency and interchangeability, manufactured to meet the rigorous DIN 7991 standard.
• Safe for regulated industries with full compliance to RoHS 3 and REACH environmental directives, ensuring no hazardous substance restrictions are breached.

Professional Applications & Engineering Value

Engineered for demanding industrial fastening applications, this M4 brass flat head screw combines material integrity with precision engineering. The use of brass provides inherent resistance to corrosion and galvanic action, making it an excellent choice for electrical components, marine hardware, and plumbing systems where moisture is a concern. The metric coarse thread (M4 x 0.7 mm) and Class 6g thread fit ensure rapid assembly and a secure hold in various base materials, from metals to plastics. The hex drive design allows for high torque application, preventing stripping and ensuring the screw seats perfectly with its flat head profile for a flush finish. This makes it invaluable in machinery, automotive assemblies, and consumer electronics where reliability, a clean aesthetic, and compliance with international standards like DIN 7991 are non-negotiable for product quality and safety.

Specification Summary & Compliance

This screw features a Metric M4 x 0.7 mm coarse thread with a Class 6g tolerance for precise fit. It is fully threaded and has a right-hand thread direction. The manufacturing and dimensional specifications conform to the DIN 7991 standard. The product is compliant with RoHS 3 (2015/863/EU) under exemption 6(a)-I and is REACH (EC 1907/2006) compliant, adhering to the latest substance restriction lists for safe use in regulated markets.