S-94640A601 7/8"-14 Weld Nuts

Key Features & Benefits at a Glance

• Enhanced reverse-thread security with left-hand UNF threading prevents loosening in rotating equipment applications
• Superior strength-to-weight ratio from 4130 alloy steel construction withstands extreme mechanical stress and vibration
• Precision tube integration with exact 1 3/4" OD and 0.25" wall thickness compatibility ensures leak-proof fluid system connections
• Reliable thread engagement through Class 2B fit and fine 14-TPI spacing maintains consistent clamping force in high-vibration environments
• Full 2-inch thread coverage provides maximum load distribution across the entire tube end connection
• Long-term environmental compliance with RoHS 3 and REACH standards ensures safe use in regulated industrial sectors
• Optimized for welded assemblies with tube-end design creates permanent, high-strength joints in structural frameworks

Professional Applications & Engineering Value

This left-hand thread tube end weld nut solves critical reverse-rotation challenges in industrial machinery and hydraulic systems where standard right-hand threads would naturally loosen. The 4130 alloy steel construction delivers exceptional fatigue resistance for high-vibration applications while maintaining weldability for permanent installations. Engineered with UNF fine threading and Class 2B fit, this nut ensures precise alignment and consistent torque transmission in tube fitting assemblies requiring 1 3/4" OD compatibility. The specialized left-hand direction provides failsafe performance in conveyor systems, mixing equipment, and rotational mechanisms where counter-directional threading is essential for operational safety and reliability.

Specification Summary & Compliance

This weld nut features 7/8"-14 UNF left-hand fine threading with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and reliable engagement. The 2-inch thread length provides full coverage for maximum load distribution. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for use in regulated industries including aerospace, automotive, and heavy equipment manufacturing where material compliance is mandatory.