S-97760A825 M12 x 25 mm ASME B18.2.3.1M, ISO 898-1 Left-Hand Threaded Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Left-Hand Threaded Medium-Strength Metric Class 8.8 Steel Hex Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional tensile strength of 110,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Rockwell C21 hardness provides superior resistance to wear and deformation, extending service life in demanding environments.
- Left-hand thread direction offers secure fastening in applications where standard right-hand threads may loosen due to rotational forces.
- Class 6g thread fit guarantees precise engagement and consistent clamping force, minimizing assembly issues and rework.
- Fully threaded design allows for maximum grip length and uniform load distribution across the entire fastener.
- Coarse thread spacing enables quicker installation and reduced cross-threading risks, improving assembly efficiency.
- Compliance with ASME B18.2.3.1M and ISO 898-1 standards ensures interchangeability and reliability in global engineering projects.
Professional Applications & Engineering Value
This M12 left-hand hex head screw is engineered to address critical challenges in industrial settings where reverse rotation or vibration-induced loosening is a concern. The Class 8.8 steel construction, combined with a coarse metric thread and external hex drive, provides robust fastening for machinery, automotive assemblies, and heavy equipment. Its fully threaded profile ensures maximum holding power, while the left-hand thread design prevents unintended disassembly in rotating systems. Ideal for maintenance and OEM applications, this fastener delivers consistent performance under dynamic loads, reducing downtime and enhancing operational safety.
Specification Summary & Compliance
This screw features M12 x 1.75mm coarse threads with a Class 6g thread fit for precise dimensional accuracy. It conforms to ASME B18.2.3.1M and ISO 898-1 manufacturing specifications, ensuring reliable mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe industrial use.
