S-94640A164 1/2"-20 Weld Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance with left-hand UNF fine threading that maintains secure connections in high-torque applications
• Enhanced durability through 4130 alloy steel construction providing excellent strength-to-weight ratio for demanding industrial environments
• Precision tube fitting engineered specifically for 7/8" OD tubing with 0.058" wall thickness compatibility
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
• Optimized installation flexibility through partial threading design allowing for precise positioning in welding applications
• Long-term operational safety with full compliance to RoHS 3 and REACH environmental regulations
• Extended service life with 1 1/4" thread length providing ample engagement for secure, permanent installations

Professional Applications & Engineering Value

This tube end weld nut delivers critical engineering solutions for industrial fluid systems and structural applications where reverse-thread security is paramount. The 4130 alloy steel construction provides exceptional tensile strength and heat resistance during welding operations, while the left-hand UNF fine threading prevents accidental loosening in rotating machinery applications. Engineered specifically for 7/8" OD tubing systems, this partially threaded design allows for precise alignment before final welding, reducing installation time and improving joint integrity. The Class 2B thread fit ensures smooth engagement with mating components while maintaining vibration resistance in demanding environments such as hydraulic systems, pneumatic assemblies, and heavy equipment manufacturing where reliable tube connections are critical to operational safety and performance.

Specification Summary & Compliance

This precision tube end weld nut features 1/2"-20 UNF left-hand fine threading with Class 2B thread fit tolerance for consistent mating performance. The partially threaded design provides 1 1/4" thread length with overall height of 1 3/8", engineered specifically for 7/8" tube OD applications with 0.058" wall thickness compatibility. Manufactured to industrial standards using 4130 alloy steel, this component is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental regulations for industrial fastener applications.