S-93020A105 M4 x 12 mm Coupling Nuts

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Black-oxide steel coating provides superior protection against rust and wear in harsh industrial environments, extending service life.
• Precision Thread Fit: Class 6H thread tolerance ensures reliable, vibration-resistant connections, reducing the risk of loosening in dynamic applications.
• Easy Installation & Removal: External hex drive design allows for quick assembly and disassembly using standard metric tools, saving labor time.
• Full Thread Engagement: Fully threaded body maximizes contact area for stronger, more stable joints between threaded rods or components.
• Metric Standard Compliance: Coarse 0.7 mm pitch threading conforms to common metric specifications, ensuring compatibility with M4 fasteners globally.
• Durable Steel Construction: High-strength steel material offers excellent load-bearing capacity for demanding mechanical assemblies.
• Environmental Safety: RoHS 3 compliance with exemption for lead in steel alloys guarantees safe use in regulated industries without sacrificing performance.

Professional Applications & Engineering Value

This M4 coupling nut is engineered to solve critical connectivity challenges in metric assembly systems, such as machinery, automotive, and structural frameworks. The black-oxide steel finish combats corrosion from moisture and chemicals, ideal for outdoor or high-humidity settings. With a fully threaded design and Class 6H thread fit, it delivers precise alignment and uniform stress distribution, preventing thread stripping under heavy loads. The external hex drive simplifies installation in tight spaces, reducing assembly errors and maintenance downtime. By integrating coarse pitch threading (0.7 mm), it ensures quick fastening and reliable performance in vibration-prone applications, making it a versatile choice for engineers seeking durability and efficiency.

Specification Summary & Compliance

This coupling nut adheres to metric standards with M4 thread size, 0.7 mm coarse pitch, and Class 6H thread fit for precise dimensional accuracy. It meets RoHS 3 (2015/863/EU) compliance under exemption 6(a)-I for lead in steel alloys, ensuring environmental safety. The product features a standard external hex drive (7 mm width) and fully threaded right-hand threading in a compact 12 mm length, supporting robust industrial use without compromising on regulatory requirements.