S-94640A509 3/4"-16 Weld Nuts

Key Features & Benefits at a Glance

• Secure reverse-thread locking with left-hand UNF threading prevents unintended loosening in rotating equipment applications
• Exceptional strength and durability from 4130 alloy steel construction withstands high-stress industrial environments
• Precision thread engagement with Class 2B fit ensures reliable, vibration-resistant connections in critical assemblies
• Optimized tube compatibility specifically engineered for 1 3/4" OD tubing with 0.25" wall thickness
• Enhanced welding stability through partial threading design provides superior weld surface contact area
• Regulatory compliance assurance with RoHS 3 and REACH standards for global industrial applications
• Fine thread advantage with 16 TPI spacing delivers superior clamping force and adjustment precision

Professional Applications & Engineering Value

This specialized left-hand tube end weld nut addresses critical safety requirements in rotating machinery and hydraulic systems where standard right-hand threads would naturally loosen under operational forces. The 4130 alloy steel construction provides exceptional tensile strength and heat resistance during welding operations, while the UNF fine threading ensures maximum thread engagement in thin-walled tubing applications. Engineers specify this partially threaded design to maintain optimal weld integrity while providing sufficient threaded length for secure fastening. The precise compatibility with 1 3/4" OD tubing makes it ideal for hydraulic lines, pneumatic systems, and structural tubing connections in aerospace, automotive, and heavy equipment industries where reverse-thread security is paramount.

Specification Summary & Compliance

This tube end weld nut features 3/4"-16 UNF left-hand threading with Class 2B thread fit tolerance, ensuring precision alignment and reliable performance. The partially threaded design provides 1 7/8" of usable thread length with a total height of 2". Manufactured to industrial standards for tubing applications requiring 1 3/4" OD compatibility with 0.25" wall thickness. The product is fully RoHS 3 (2015/863/EU) compliant and meets REACH (EC 1907/2006) requirements, including the latest SVHC declarations, ensuring environmental regulation adherence for global industrial distribution.