S-94640A402 3/4"-16 Weld Nuts

Key Features & Benefits at a Glance

• Superior strength and durability thanks to 4130 Alloy Steel construction, ideal for high-stress industrial environments
• Precise, reliable connections with Class 2B thread fit ensuring consistent engagement and reduced risk of cross-threading
• Optimized for reverse-thread applications with left-hand UNF threading for specialized assembly and safety-critical systems
• Full thread engagement across the 1 1/2" length provides maximum load distribution and vibration resistance
• Perfect fit for 1-1/8" OD tubing with 0.083" wall thickness, designed for seamless integration in tube end applications
• Enhanced corrosion resistance and material integrity compliant with RoHS 3 and REACH environmental standards
• Fine thread spacing allows for finer adjustment and superior clamping force in precision assemblies

Professional Applications & Engineering Value

This 3/4"-16 UNF Left Hand Tube End Weld Nut is engineered to address critical challenges in industrial tube fitting systems where reverse threading is required for safety or mechanical function. Crafted from 4130 Alloy Steel, it offers exceptional tensile strength and fatigue resistance, preventing failure under dynamic loads and vibration. The fully threaded design and Class 2B thread fit ensure a precise, leak-free connection for 1-1/8" OD tubing, commonly used in hydraulic, pneumatic, and structural applications. Its left-hand thread direction is vital in systems where standard right-hand threads could loosen due to rotational forces, providing added security in conveyors, rotating machinery, and specialized vehicle components. The nut’s compatibility with 0.083" wall thickness tubes and fine UNF threads further enhances pressure integrity and ease of installation in tight spaces, reducing maintenance downtime and improving overall system reliability.

Specification Summary & Compliance

This weld nut features a 3/4"-16 UNF left-hand thread with Class 2B thread fit and fine thread spacing, ensuring high dimensional accuracy per UNF standards. The thread length is 1 1/2", with a total height of 1 1/2", designed for 1-1/8" tube OD and 0.083" wall thickness. It is manufactured from 4130 Alloy Steel and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to strict environmental and safety standards for industrial use.