S-94640A408 5/8"-18 Weld Nuts
Weld Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Material & Strength Parameters
Installation & Application Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior vibration resistance with left-hand UNF fine threading that prevents loosening in high-stress applications
- Exceptional durability from 4130 alloy steel construction, offering high strength-to-weight ratio for demanding environments
- Precise tube integration with 1 3/8" tube OD compatibility and 0.12" wall thickness specification for secure fluid/pneumatic systems
- Optimized assembly efficiency through Class 2B thread fit ensuring smooth engagement with mating components
- Enhanced installation control with partial threading design allowing precise weld placement and alignment
- Long-term reliability with 1 5/8" thread length providing maximum engagement depth for critical connections
- Global compliance assurance meeting RoHS 3 and REACH environmental standards for international projects
Professional Applications & Engineering Value
This left-hand UNF tube end weld nut addresses critical reverse-threading requirements in hydraulic systems, aerospace tubing, and precision machinery where standard right-hand threads would unscrew under rotational forces. The 4130 alloy steel construction delivers exceptional fatigue resistance while maintaining weldability, preventing failure in high-vibration environments. With its Class 2B thread fit and 1 3/8" tube OD specification, engineers achieve leak-proof connections in fluid transfer systems while the partial threading design allows for precise heat management during welding operations. This specialized tube end weld nut solves alignment challenges in complex piping networks where reverse threading prevents accidental disassembly.
Specification Summary & Compliance
Manufactured to UNF fine thread standards with Class 2B thread fit tolerance for precision engagement. Features 5/8"-18 left-hand threading with 1 5/8" thread length and 1 7/8" overall height. Compatible with 1 3/8" OD tubing at 0.12" wall thickness. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for global manufacturing applications.
