S-94640A354 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
- Enhanced reverse-thread security with left-hand threading prevents loosening in rotating equipment applications
- Superior material strength from 4130 alloy steel provides excellent fatigue resistance in high-stress environments
- Precision thread engagement with Class 2B fit ensures reliable, vibration-resistant connections
- Optimized tube compatibility specifically designed for 1-1/4" OD tubing with 0.095" wall thickness
- Full-threaded design maximizes engagement surface for superior load distribution
- Regulatory compliance assurance with RoHS 3 and REACH compliance for global market acceptance
- Fine UNF thread profile delivers enhanced sealing capability and precise adjustment control
Professional Applications & Engineering Value
This specialized left-hand thread tube end weld nut addresses critical challenges in industrial fluid systems and rotating machinery where standard right-hand threads would naturally loosen under operational forces. The 4130 alloy steel construction provides exceptional strength-to-weight ratio, making it ideal for aerospace, hydraulic systems, and high-performance automotive applications. The UNF fine threading combined with Class 2B thread fit ensures leak-proof connections in pressurized tube systems while accommodating thermal expansion and vibration. Engineered specifically for 1-1/4" tubing with 0.095" wall thickness, this weld nut delivers reliable performance in demanding environments where reverse-thread security is paramount for operational safety and maintenance reduction.
Specification Summary & Compliance
This tube end weld nut features 5/8"-18 UNF left-hand fine threading with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and interchangeability. The 1-1/2" thread length provides full engagement capability, while manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental directives. The nut is specifically engineered for 1-1/4" tube OD applications with 0.095" wall thickness, maintaining strict quality control throughout production.
