S-97760A225 M6 x 25 mm ASME B18.2.3.1M, ISO 898-1 Left-Hand Threaded Medium-Strength Metric Class 8.8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior strength and durability with Class 8.8 steel construction, providing a high tensile strength of 110,000 psi for reliable performance under heavy loads.
• Exceptional wear resistance due to Rockwell C21 hardness, ensuring long service life and reduced replacement frequency in demanding applications.
• Secure and precise fastening with a Class 6g thread fit and coarse 1mm pitch, offering excellent grip and vibration resistance in left-hand thread scenarios.
• Efficient installation and removal using the external hex drive and 10mm head width, allowing for quick assembly with standard tools.
• Full thread coverage along the 25mm length ensures maximum engagement and holding power across the entire fastener.
• Compliance with international standards including ASME B18.2.3.1M and ISO 898-1, guaranteeing consistent quality and interchangeability.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, making it safe for various industrial and export markets.

Professional Applications & Engineering Value

This M6 left-hand hex head screw is engineered to address critical challenges in industrial settings where reverse-thread mechanisms are essential for safety and functionality. Made from Class 8.8 steel, it provides high tensile strength and Rockwell C21 hardness to withstand extreme mechanical stresses, preventing stripping or failure in high-vibration environments like machinery, automotive assemblies, and conveyor systems. The fully threaded coarse pitch design ensures rapid installation and superior resistance to loosening, while the external hex drive facilitates easy tightening in confined spaces. Ideal for applications requiring left-hand threading to prevent unintended disassembly, this screw offers reliable performance in maintenance-heavy industries, reducing downtime and enhancing operational safety.

Specification Summary & Compliance

This screw features precise metric dimensions with an M6 x 1mm coarse thread, 25mm length, and Class 6g thread fit tolerance for accurate mating. It conforms to ASME B18.2.3.1M and ISO 898-1 standards, ensuring consistent mechanical properties and manufacturing quality. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and sustainable industrial practices.