S-91294A250 M6 x 50 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 applications, reducing the risk of fastener failure.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh environments and minimizing maintenance needs.
• High hardness rating (Rockwell C32) provides excellent wear resistance, maintaining thread integrity and drive engagement over repeated use.
• Precise Class 6g thread fit with coarse 1 mm pitch allows for quick, secure installation and easy assembly in various materials.
• Fully threaded design offers consistent clamping force along the entire 50 mm length, enhancing joint stability in demanding setups.
• Standard 90° countersink angle and flat head ensures a flush, low-profile finish, ideal for applications where surface smoothness is critical.
• Compliance with DIN 7991/ISO 10642 standards guarantees dimensional accuracy and interoperability, supporting global engineering specifications.

Professional Applications & Engineering Value

Engineered for rigorous industrial use, this M6 flat head screw combines black-oxide alloy steel construction with a Class 10.9 strength grade to address common challenges like vibration loosening and environmental degradation. The fully threaded metric screw design, paired with a coarse thread pitch of 1 mm, ensures rapid installation and robust holding power in metals, plastics, and composites. Its hex drive (4 mm) allows for high-torque application without stripping, while the flat head profile and 90° countersink enable seamless integration in machinery, automotive assemblies, and structural frameworks where flush mounting is essential. This screw delivers long-term reliability in industrial applications, reducing downtime and replacement costs.

Specification Summary & Compliance

This fastener adheres to precise metric dimensions, including an M6 x 1 mm thread with Class 6g tolerance for consistent fit. It meets DIN 7991 and ISO 10642 manufacturing standards, ensuring thread accuracy and head geometry. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it is free of hazardous substances, supporting sustainable and safe industrial practices.