S-93975A420 1/2"-20 ASME B1.1 Weld Nuts

Key Features & Benefits at a Glance

• Superior welding performance with square shape design that prevents rotation during welding operations
• Exceptional thread reliability with Class 2B thread fit ensuring smooth assembly and disassembly
• Optimized dimensional stability featuring 13/16" width and 3/8" height for consistent mating with connected components
• Enhanced corrosion resistance through high-quality steel construction suitable for demanding industrial environments
• Precision hole alignment with 47/64" recommended hole diameter for accurate positioning during installation
• Regulatory compliance assurance meeting both RoHS 3 and REACH environmental standards
• Industry-standard compatibility manufactured to ASME B1.1 specifications for reliable performance across applications

Professional Applications & Engineering Value

This 1/2"-20 UNF square weld nut delivers exceptional engineering value in industrial welding applications where vibration resistance and permanent fastening are critical. The square weld nut design with 23/32" collar diameter provides maximum contact surface area, distributing stress evenly and preventing rotation under dynamic loads. The fine UNF threads (20 threads per inch) offer superior clamping force compared to coarse threads, making this steel weld nut ideal for high-stress applications in machinery, structural frameworks, and heavy equipment. The Class 2B thread fit ensures reliable engagement with mating bolts while accommodating minor misalignments common in welding operations. This combination of precise engineering and robust steel material solves common industrial challenges of loosening under vibration and corrosion degradation in harsh environments.

Specification Summary & Compliance

This square weld nut features 1/2"-20 UNF fine threads with Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and reliable performance. The nut measures 13/16" in width, 3/8" in height, with a collar diameter of 23/32" and height of 0.063", designed for 47/64" hole diameter applications. The product is manufactured from high-grade steel material and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making it suitable for global industrial applications requiring strict regulatory adherence.