S-94640A540 5/8"-18 Weld Nuts

Key Features & Benefits at a Glance

• Exceptional strength and durability from 4130 Alloy Steel construction, ideal for high-stress industrial environments
• Precise thread engagement with Class 2B thread fit ensuring reliable, vibration-resistant connections in critical applications
• Optimized for 1 1/8" tubing systems with specific compatibility for 0.083" wall thickness, providing perfect fit and superior sealing
• Fine UNF threading (5/8"-18) delivers increased load distribution and superior resistance to loosening under dynamic loads
• Full 1 1/2" threading length offers maximum contact surface for enhanced grip strength and connection integrity
• Right-hand fully threaded design enables straightforward installation and consistent performance across assembly operations
• Comprehensive regulatory compliance with RoHS 3 and REACH standards ensures environmental safety and global market acceptance

Professional Applications & Engineering Value

This 5/8"-18 UNF tube end weld nut delivers critical engineering solutions for fluid systems, structural frameworks, and mechanical assemblies requiring reliable end connections. The 4130 Alloy Steel composition provides exceptional tensile strength and fatigue resistance, directly addressing vibration-induced failure in dynamic applications. With its UNF fine threading and Class 2B thread fit, this component maintains precise alignment and prevents leakage in high-pressure hydraulic and pneumatic systems. The specialized design for 1 1/8" tube OD with 0.083" wall thickness compatibility ensures optimal weld integrity and load distribution, making it indispensable in aerospace, automotive, and heavy equipment manufacturing where joint reliability is paramount.

Specification Summary & Compliance

This tube end weld nut features 5/8"-18 UNF fine threading with Class 2B thread fit per unified thread standards, ensuring precise dimensional accuracy and interchangeability. The 1 1/2" thread length and right-hand fully threaded configuration provide consistent engagement depth. Manufacturing complies with industry standards for inch system components, with full adherence to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming hazardous substance restriction compliance for global industrial applications.