S-90202A101 M4 x 20 mm ASTM A582 Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with 18-8 stainless steel construction for reliable performance in harsh industrial environments
• Superior thread engagement through fully threaded design and Class 6H thread fit ensuring precise, secure connections
• Optimized for metric applications with M4 size and 0.7mm coarse pitch for quick installation and strong holding power
• Industry-standard compliance meeting ASTM A582 specifications for consistent quality and performance
• Environmental responsibility with RoHS 3 and REACH compliance for safe use across global markets
• Versatile coupling capability with 20mm length and 8mm OD providing ample thread engagement for various rod-to-rod connections
• Right-hand threading compatibility for standard assembly procedures and easy integration with existing metric systems

Professional Applications & Engineering Value

This M4 coupling nut delivers exceptional engineering value in applications requiring extended thread engagement between two threaded rods or components. The 18-8 stainless steel material provides excellent corrosion resistance, making it ideal for chemical processing, marine equipment, and outdoor installations where moisture exposure is a concern. The fully threaded design with coarse 0.7mm pitch ensures maximum thread contact area, distributing load evenly and preventing stress concentration points that could lead to failure. Manufacturing facilities benefit from the Class 6H thread fit precision, which guarantees consistent performance in automated assembly lines and reduces the risk of cross-threading during installation. The metric threading system makes this coupling nut particularly valuable for European machinery, automotive subsystems, and industrial equipment requiring reliable metric fastening solutions that maintain alignment and structural integrity in demanding applications.

Specification Summary & Compliance

This coupling nut features precise Class 6H thread fit tolerance according to metric standards, ensuring optimal thread engagement and mechanical performance. The product complies with ASTM A582 manufacturing specifications for material quality and dimensional accuracy. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted substances. Key dimensional specifications include M4 thread size, 0.7mm pitch coarse threading, 8mm outer diameter, and 20mm length, providing reliable coupling performance for industrial fastening applications requiring extended thread engagement.