S-94640A305 1/2"-20 Weld Nuts

Key Features & Benefits at a Glance

• Exceptional durability with 4130 alloy steel construction, offering superior strength and corrosion resistance for demanding industrial environments.
• Secure left-hand thread engagement prevents loosening under counter-clockwise rotational forces, ideal for specialized mechanical assemblies.
• Precise Class 2B thread fit ensures smooth, reliable mating with UNF fine threads, reducing the risk of cross-threading and assembly errors.
• Optimized for 1-1/8" tube OD and 0.058" wall thickness, providing a perfect fit and consistent performance in tube-based systems.
• Partial threading design allows for flexible positioning and secure welding, enhancing installation efficiency and joint integrity.
• Full compliance with RoHS 3 and REACH regulations, ensuring environmental safety and suitability for global industrial supply chains.
• Fine UNF thread spacing delivers higher tensile strength and better vibration resistance compared to coarse threads.

Professional Applications & Engineering Value

This 1/2"-20 UNF left-hand thread tube end weld nut is engineered to address critical challenges in hydraulic, pneumatic, and structural tubing systems. Crafted from 4130 alloy steel, it provides excellent fatigue resistance and withstands high-stress conditions, preventing failure in dynamic applications. The left-hand threading is specifically designed for components subject to reverse rotation, minimizing unintentional loosening. Its partially threaded and Class 2B fit ensures easy alignment and secure attachment to tubes, reducing installation time and improving weld consistency. Ideal for aerospace, automotive, and heavy machinery, this nut offers a reliable, corrosion-resistant fastening solution that maintains system integrity under rigorous operational demands.

Specification Summary & Compliance

This weld nut features a 1/2"-20 UNF fine thread with Class 2B thread fit, ensuring precise dimensional accuracy and compatibility with standard UNF components. It is manufactured to meet industry specifications for partially threaded left-hand fasteners, with a thread length of 1-1/4" and overall height of 1-1/2". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.