S-94640A225 5/8"-18 Weld Nuts

Key Features & Benefits at a Glance

• Superior Weld Integrity: Specifically engineered for 1" tube OD applications with 0.058" wall thickness, ensuring a secure and permanent connection in fluid and structural systems.
• Exceptional Material Strength: Constructed from 4130 Alloy Steel for high tensile strength and excellent resistance to stress and vibration in demanding industrial environments.
• Precision Thread Engagement: Features a Class 2B thread fit on a 5/8"-18 UNF fine thread, providing smooth, reliable assembly and reducing the risk of cross-threading.
• Optimized for Full Thread Utilization: The 1-1/2" fully threaded length allows for maximum adjustability and a stronger hold along the entire engagement area.
• Right-Hand Thread Convenience: Standard right-hand threading ensures compatibility with common assembly tools and procedures, streamlining installation.
• Regulatory Compliance Assurance: Fully compliant with RoHS 3 and REACH standards, guaranteeing the product is free from hazardous substances for safe use in regulated industries.
• Dimensional Consistency: Manufactured to precise inch system measurements, ensuring repeatable performance and interchangeability in OEM and MRO applications.

Professional Applications & Engineering Value

This tube end weld nut is engineered to solve critical challenges in hydraulic, pneumatic, and structural tubing systems. The use of high-strength 4130 Alloy Steel provides the durability needed to withstand high-pressure cycles and mechanical loads, preventing joint failure. The UNF fine threading offers a higher number of threads per inch compared to coarse threads, resulting in a finer adjustment capability and a more secure, leak-resistant seal when used in conjunction with appropriate fittings. Its design for a specific 1" tube OD and 0.058" wall thickness ensures a perfect fit, minimizing stress concentrations at the weld point. This makes it an indispensable industrial fastener for applications in aerospace, automotive, and heavy machinery where reliability and precision are non-negotiable.

Specification Summary & Compliance

This weld nut conforms to the Unified National Fine (UNF) thread standard with a Class 2B thread fit, ensuring consistent dimensional accuracy and interchangeability. The threading is 5/8"-18 and is fully threaded over a length of 1-1/2". It is manufactured from 4130 Alloy Steel and is designed for use with a 1" outer diameter tube having a 0.058" wall thickness. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its adherence to strict environmental and safety standards for industrial components.