S-90082A111 M4 x 12 mm Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced Durability in Harsh Environments – Black-oxide steel coating provides superior corrosion resistance, extending service life in demanding industrial conditions.
• High-Strength Performance – Class 8 strength grade ensures reliable load-bearing capacity and resistance to deformation under high stress.
• Secure and Precise Thread Engagement – Class 6H thread fit guarantees accurate mating with compatible bolts, minimizing the risk of cross-threading and loosening.
• Efficient Installation with External Hex Drive – Standard hex profile allows for easy application of high torque using common wrenches, speeding up assembly processes.
• Versatile Coarse Thread Design – M4 x 0.7 mm coarse pitch threading facilitates quick assembly and disassembly, even in applications with debris or minor misalignment.
• Full Threading for Maximum Grip – Fully threaded design distributes clamping force evenly along the entire length, enhancing connection stability.
• Compliance with International Standards – Meets REACH and RoHS 3 environmental regulations, ensuring safe use in regulated industries and global markets.

Professional Applications & Engineering Value

This M4 coupling nut is engineered to address common challenges in industrial assembly, such as vibration-induced loosening and corrosion in harsh environments. The black-oxide steel construction offers a protective layer that resists oxidation, making it ideal for outdoor machinery, automotive systems, and electrical enclosures exposed to moisture. Its fully threaded metric hex design ensures consistent engagement across the entire 12 mm length, providing a secure link between threaded rods or bolts in frameworks, conveyor systems, and structural supports. The coarse 0.7 mm pitch threading allows for rapid installation and reduces the risk of jamming, while the external hex drive enables high-torque application without slippage. By combining strength, precision, and compliance, this coupling nut delivers reliable performance in demanding applications, minimizing downtime and maintenance costs.

Specification Summary & Compliance

This coupling nut adheres to precise dimensional standards, including a Class 6H thread fit for metric threading, ensuring compatibility with standard M4 bolts. The manufacturing follows rigorous specifications for Class 8 strength and a 7 mm width by 12 mm length profile. It is fully compliant with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, with exemptions for lead as an alloying element in steel, confirming its suitability for environmentally conscious industrial use.