S-94640A294 5/8"-18 Weld Nuts

Key Features & Benefits at a Glance

• Exceptional strength and durability from 4130 alloy steel construction, ideal for high-stress tube fitting applications.
• Secure, vibration-resistant connections ensured by the Class 2B thread fit and fine UNF threading for precise engagement.
• Optimized for reverse-thread applications with left-hand threading, preventing loosening in specific rotational environments.
• Perfect fit for 1" OD tubing with a 0.095" wall thickness, designed specifically for reliable tube end installations.
• Full 1-1/2" threading provides maximum thread contact and clamping force for a robust, leak-resistant seal.
• Compliance with stringent environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Reliable performance in demanding conditions due to its inch-system standardization and robust material properties.

Professional Applications & Engineering Value

This 5/8"-18 UNF left-hand tube end weld nut is engineered to solve critical challenges in industrial fluid and pneumatic systems. Crafted from high-strength 4130 alloy steel, it resists deformation under high torque and vibration, a common failure point in dynamic environments. The fully threaded, left-hand design is essential for assemblies where standard right-hand rotation would cause unintended loosening, such as in certain machinery or vehicle components. Its precise Class 2B thread fit and compatibility with a 1" OD tube and 0.095" wall thickness ensure a perfect, secure fit, minimizing the risk of leaks and structural failures. This makes it an indispensable component for heavy-duty tube fittings in sectors like aerospace, automotive, and hydraulic systems, where reliability and specification adherence are non-negotiable.

Specification Summary & Compliance

This weld nut features a 5/8"-18 UNF fine thread with a Class 2B thread fit per standard inch measurement system practices, ensuring high dimensional accuracy and interchangeability. The product is manufactured to meet industry standards for left-hand threaded, fully threaded tube end nuts. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety requirements for hazardous substances.