S-91239A326 M6 x 20 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the black-oxide finish on alloy steel prolongs service life, even in harsh industrial environments.
• High hardness rating (Rockwell C32) provides excellent wear resistance, maintaining thread integrity and drive engagement over repeated use.
• Coarse 1 mm pitch threading with Class 6g fit allows for quick, secure installation and reduced cross-threading risks, speeding up assembly processes.
• Fully threaded design offers consistent clamping force along the entire length, enhancing joint stability in various material thicknesses.
• Hex drive compatibility with a 4 mm drive size enables easy torque application using standard tools, minimizing slippage and improving installation efficiency.
• Compliance with ISO 7380 and environmental standards ensures consistent quality and safe use in regulated industries, supporting global supply chain requirements.

Professional Applications & Engineering Value

Engineered for high-strength industrial applications, these M6 button head screws address critical challenges in machinery, automotive, and structural assemblies. The black-oxide alloy steel construction combats corrosion and wear, extending component life in environments exposed to moisture or chemicals. With a coarse thread pitch and Class 6g fit, these screws facilitate rapid installation while maintaining precise alignment, reducing assembly time and labor costs. The fully threaded metric design ensures uniform stress distribution, preventing loosening under vibration and dynamic loads. Ideal for high-torque hex drive setups, they provide reliable fastening in equipment requiring frequent maintenance or disassembly, delivering long-term engineering value through durability and compliance with international standards.

Specification Summary & Compliance

This fastener meets ISO 7380 specifications for dimensional accuracy, including a Class 6g thread fit and M6 x 1 mm coarse pitch threading. It adheres to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring environmental safety and regulatory acceptance. The Class 10.9 strength grade and Rockwell C32 hardness confirm high mechanical performance, suitable for rigorous industrial use.