S-94640A403 1/2"-20 Weld Nuts

Key Features & Benefits at a Glance

• Superior strength and durability from 4130 Alloy Steel construction, ideal for high-stress industrial environments
• Precise left-hand threading ensures secure, reverse-direction fastening to prevent loosening in rotating applications
• Class 2B thread fit provides consistent, reliable engagement with mating components for vibration resistance
• Partial threading design allows for easier alignment and installation while maintaining full holding power
• Optimized for 1-1/8" tube OD with 0.095" wall thickness delivers perfect fit and maximum load distribution in tubing systems
• UNF fine thread spacing offers finer adjustment control and improved sealing capabilities
• Full regulatory compliance with RoHS 3 and REACH standards for safe use in global markets

Professional Applications & Engineering Value

This specialized left-hand tube end weld nut addresses critical challenges in industrial assembly where reverse-direction threading is essential for safety and functionality. The 4130 Alloy Steel construction provides exceptional tensile strength and fatigue resistance, making it suitable for high-vibration environments in automotive, aerospace, and heavy machinery applications. The partially threaded design facilitates easier alignment during welding operations while maintaining structural integrity. Engineered specifically for 1-1/8" tubing systems with 0.095" wall thickness, this UNF fine thread nut ensures leak-proof connections in hydraulic and pneumatic systems where left-hand thread solutions prevent accidental disassembly in rotating mechanisms.

Specification Summary & Compliance

This tube end weld nut features precision 1/2"-20 UNF left-hand threads with Class 2B thread fit per UNF standards, ensuring consistent dimensional accuracy and reliable performance. The partial threading extends 1-1/4" with an overall height of 1-1/2", specifically engineered for 1-1/8" OD tubing with 0.095" wall thickness. Manufactured in accordance with industry standards and fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for international industrial applications requiring stringent material compliance.