S-94640A490 1/2"-20 Weld Nuts

Key Features & Benefits at a Glance

• Exceptional strength-to-weight ratio from 4130 alloy steel construction, providing reliable performance in demanding industrial environments
• Precise tube compatibility specifically engineered for 1-1/8" OD tubing with 0.065" wall thickness, ensuring perfect fit and optimal load distribution
• Superior thread engagement with Class 2B thread fit and UNF fine threading, delivering vibration resistance and consistent clamping force
• Optimized welding performance through partial threading design that minimizes heat-affected zones during welding operations
• Enhanced installation efficiency with right-hand threading that follows standard assembly practices for faster production cycles
• Long-term reliability backed by full compliance with RoHS 3 and REACH environmental regulations
• Reduced maintenance requirements through corrosion-resistant alloy steel composition that withstands harsh operating conditions

Professional Applications & Engineering Value

This 1/2"-20 UNF weld nut delivers critical engineering solutions for tube end applications requiring robust fastening in structural frameworks and fluid systems. The 4130 alloy steel construction provides exceptional tensile strength and fatigue resistance, addressing common failure points in high-vibration environments like hydraulic systems, automotive chassis, and industrial machinery. The partial threading design prevents weld spatter contamination in threaded areas while maintaining full structural integrity. With UNF fine threading and Class 2B thread fit, this tube end nut ensures precise alignment and secure connections in critical assembly operations, reducing installation time and eliminating thread damage during welding processes. The specialized design accommodates standard 1-1/8" OD tubing, making it ideal for hydraulic lines, structural tubing, and precision mechanical assemblies where reliable, long-term performance is essential.

Specification Summary & Compliance

This precision tube end weld nut features 1/2"-20 UNF fine threading with Class 2B thread fit per unified screw thread standards, ensuring consistent engagement and reliable torque performance. The partially threaded design with 1-1/4" thread length provides optimal weld clearance while maintaining full mechanical strength. Manufacturing complies with industry standards for dimensional accuracy and material properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial components. Designed specifically for 1-1/8" OD tubing with 0.065" wall thickness, this nut delivers precise compatibility and performance in demanding applications.