S-99183A590 M12 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance with distorted top-lock threads that maintain secure fastening under dynamic loads
• Enhanced corrosion protection from the black phosphate coating, extending service life in harsh industrial environments
• High-strength performance with Class 10 rating, ensuring reliable load-bearing capacity for heavy-duty applications
• Easy installation and removal using standard external hex drive tools, reducing assembly time and labor costs
• Wide compatibility with coarse metric threads (M12x1.75mm) and Class 6H fit, providing precise engagement with mating components
• Compliance with environmental standards including REACH and RoHS 3, meeting stringent regulatory requirements for industrial use
• Durable construction in standard hex profile, offering consistent performance in high-stress mechanical assemblies

Professional Applications & Engineering Value

This M12 locknut is engineered to address critical challenges in industrial settings where vibration-induced loosening can compromise safety and operational integrity. The distorted thread locking mechanism creates persistent friction along the mating thread, effectively resisting rotational forces without requiring additional locking elements. Made from black phosphate steel, it provides a robust barrier against moisture, chemicals, and abrasion, making it ideal for automotive, machinery, and construction applications. The Class 10 strength ensures it withstands high tensile and shear stresses, while the metric coarse thread design facilitates quick assembly in time-sensitive production environments. By integrating this heavy-duty locknut into your designs, you enhance reliability and reduce maintenance intervals.

Specification Summary & Compliance

This locknut adheres to metric thread standards with M12 size, 1.75mm pitch, and Class 6H thread fit for precise dimensional accuracy. It meets REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) compliance, ensuring environmental safety. The external hex drive and right-hand thread design follow common industrial practices for ease of use.