S-94640A290 5/8"-18 Weld Nuts

Key Features & Benefits at a Glance

• Superior strength and durability from 4130 Alloy Steel construction, ideal for high-stress tube fitting applications
• Precise Class 2B thread fit ensures smooth assembly and reliable, vibration-resistant connections in industrial environments
• Fine UNF threading (5/8"-18) provides enhanced load distribution and superior sealing for 1" tube OD systems
• Fully threaded right-hand design allows for maximum engagement and consistent performance across the entire 1 1/2" length
• Optimized for 0.095" tube wall thickness delivering secure, leak-resistant joints in hydraulic and pneumatic systems
• RoHS 3 and REACH compliance guarantees environmental safety and meets global regulatory standards for industrial components
• Weld-ready tube end design simplifies installation and ensures permanent, high-integrity connections in heavy-duty applications

Professional Applications & Engineering Value

This 5/8"-18 UNF tube end weld nut is engineered to solve critical challenges in industrial tube and piping systems. Made from 4130 Alloy Steel, it offers exceptional tensile strength and fatigue resistance, preventing failure under dynamic loads and vibration. The fully threaded, fine UNF design with Class 2B precision ensures tight, reliable seals for 1" OD tubes, minimizing leakage risks in hydraulic, pneumatic, and structural applications. Its weld-ready construction allows for permanent installation, reducing maintenance needs and enhancing system longevity in heavy-duty equipment, machinery, and transportation systems where reliability is non-negotiable.

Specification Summary & Compliance

This weld nut features a 5/8"-18 UNF fine thread with Class 2B thread fit per unified screw thread standards, ensuring precise dimensional accuracy and interchangeability. It is manufactured from 4130 Alloy Steel with a 1 1/2" height and fully threaded right-hand design, compatible with 1" tube OD and 0.095" wall thickness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting stringent environmental and safety requirements for industrial use.