S-91294A251 M6 x 55 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with Class 10.9 rating (120,000 psi) ensures reliable performance under high-stress industrial loads.
• Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in harsh environments.
• Precise thread engagement with Class 6g fit and coarse 1 mm pitch for quick, secure installation and vibration resistance.
• Optimized drive efficiency using a 4 mm hex drive, allowing high torque application without slippage in confined spaces.
• Full threading along the 55 mm length provides consistent clamping force and flexibility in material thickness.
• Standard 90° countersink angle and flat head design enables flush mounting for smooth, safe surfaces.
• Compliance with DIN 7991/ISO 10642 standards guarantees dimensional accuracy and interchangeability in global applications.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M6 flat head screws address critical challenges in machinery assembly, automotive frameworks, and structural fixtures. The black-oxide alloy steel construction combats rust and wear, while the Class 10.9 strength and Rockwell C32 hardness prevent stripping and fatigue under dynamic loads. With a fully threaded coarse pitch and hex drive, installation is swift and secure, reducing downtime. Ideal for heavy-duty fastening where corrosion resistance and high tensile strength are paramount, these screws ensure long-term reliability in metric-based systems.

Specification Summary & Compliance

This M6 x 55 mm screw features a 1 mm coarse pitch with Class 6g thread fit per ISO metric standards, ensuring precise tolerance. It meets DIN 7991/ISO 10642 specifications for dimensional consistency and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting eco-friendly and safe industrial use.