S-96177A450 1/2"-20 x 1 1/4" ASTM A108 Coupling Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance from the black-oxide steel finish, extending service life in demanding industrial environments.
• Precise and reliable connections ensured by the Class 2B thread fit, minimizing the risk of cross-threading and assembly failures.
• Maximum engagement strength due to the fully threaded design, providing consistent clamping force along the entire length.
• Guaranteed material integrity and performance compliance with the ASTM A108 standard for quality assurance.
• Optimized for fine-thread applications with the 1/2"-20 UNF thread, offering superior vibration resistance in precision assemblies.
• Simplified installation with standard right-hand threading, compatible with common tools and procedures.
• Environmentally responsible manufacturing with full compliance to RoHS 3 and REACH regulations, meeting global supply chain requirements.

Professional Applications & Engineering Value

This black-oxide steel coupling nut is engineered to solve critical challenges in industrial assembly and precision mechanical systems. The fully threaded UNF design with fine thread spacing provides exceptional resistance to loosening under vibration, a common failure point in machinery and automotive applications. Manufactured from ASTM A108 steel, it delivers consistent tensile strength and durability for connecting rods, shafts, and other long-stretch components. The black-oxide surface treatment adds a protective layer that reduces corrosion without significantly altering dimensions, making it ideal for use in environments where moisture or chemicals are present. This coupling nut ensures a reliable, high-strength link that maintains integrity in demanding B2B industrial settings, from manufacturing equipment to structural frameworks.

Specification Summary & Compliance

This coupling nut features a 1/2"-20 UNF thread with a Class 2B thread fit for consistent dimensional accuracy and ease of assembly. It meets the material and manufacturing specifications of ASTM A108, ensuring reliable performance. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for industrial use.