S-94640A307 1/2"-20 Weld Nuts

Key Features & Benefits at a Glance

• Enhanced vibration resistance through left-hand threading that prevents loosening in rotating equipment applications
• Superior strength-to-weight ratio with aircraft-grade 4130 alloy steel construction for demanding industrial environments
• Precise tube system integration with dedicated 1-1/8" tube OD compatibility and 0.065" wall thickness specification
• Optimized thread engagement featuring Class 2B thread fit for smooth assembly and reduced cross-threading risk
• Extended service life with UNF fine threading providing superior load distribution and fatigue resistance
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global manufacturing applications
• Strategic partial threading allowing precise weld placement while maintaining full thread functionality

Professional Applications & Engineering Value

This left-hand tube end weld nut addresses critical challenges in rotating machinery and high-vibration systems where conventional right-hand threads would naturally loosen. The 4130 alloy steel construction provides exceptional tensile strength and durability for aerospace, hydraulic systems, and heavy-duty industrial equipment. The UNF fine threading (1/2"-20) ensures superior clamping force distribution across the 1-1/4" thread length, while the Class 2B thread fit guarantees consistent performance in tube fitting applications requiring precise 1-1/8" OD compatibility. The partially threaded design facilitates optimal weld placement without compromising thread integrity, making it ideal for structural tube assemblies where reliability is paramount.

Specification Summary & Compliance

This tube end weld nut features 1/2"-20 UNF left-hand fine threading with Class 2B thread fit per UNF standards, ensuring precise dimensional accuracy. The partial threading extends 1-1/4" with overall height of 1-1/2", engineered specifically for 1-1/8" tube OD with 0.065" wall thickness. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental compliance for international industrial applications.