S-94640A501 5/8"-18 Weld Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through left-hand threading that prevents loosening in rotating applications
• Enhanced durability in demanding environments with 4130 alloy steel construction offering excellent strength-to-weight ratio
• Precise tube system integration with specialized design for 1 1/2" OD tubes and 0.095" wall thickness compatibility
• Reliable thread engagement through Class 2B thread fit ensuring consistent performance in assembly operations
• Optimized installation efficiency with partial threading that simplifies welding positioning and reduces assembly time
• Long-term operational safety with full compliance to RoHS 3 and REACH environmental regulations
• Secure fine-thread performance through 5/8"-18 UNF specification providing superior clamping force in precision applications

Professional Applications & Engineering Value

This tube end weld nut delivers critical engineering solutions for industrial fluid systems and mechanical assemblies requiring left-hand thread security. The 4130 alloy steel construction maintains structural integrity under high stress and temperature variations, while the partially threaded design allows for precise weld placement without compromising thread integrity. Engineered specifically for 1 1/2" OD tubing with 0.095" wall thickness, this component addresses common challenges in hydraulic systems, pneumatic controls, and rotating machinery where reverse-direction threading prevents accidental disassembly. The UNF fine threading with Class 2B fit ensures leak-proof connections in critical flow applications, making it ideal for aerospace, automotive, and heavy equipment industries demanding reliable tube fitting solutions.

Specification Summary & Compliance

This weld nut features 5/8"-18 UNF left-hand fine threading with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy. The 1 5/8" thread length and 1 7/8" height provide optimal engagement for tube end applications. Manufacturing complies with industry standards for inch system fasteners and demonstrates full conformity to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, guaranteeing safe use in industrial applications worldwide.