S-90594A031 3/8"-16 Weld Nuts

Key Features & Benefits at a Glance

• Enhanced welding stability with a rectangular base design that provides a larger surface area for secure, high-strength welds in demanding industrial environments.
• Superior thread reliability thanks to the 3/8"-16 UNC coarse thread and Class 1B fit, ensuring smooth assembly and reduced risk of cross-threading in repetitive fastening operations.
• Robust durability from high-quality steel construction, offering excellent resistance to wear, vibration, and mechanical stress for long-lasting performance.
• Optimized barrel dimensions (29/64" diameter, 7/16" height) that facilitate precise alignment and consistent weld penetration, minimizing installation errors.
• Right-hand thread convenience for standard tooling and familiar installation processes, improving efficiency on the production line.
• Compliance with environmental standards, including REACH and RoHS 3, ensuring safe use in regulated industries without hazardous substances.
• Versatile inch-system compatibility for seamless integration with existing machinery and components in North American and global industrial applications.

Professional Applications & Engineering Value

This rectangular steel weld nut is engineered to address common challenges in heavy-duty fabrication, such as maintaining joint integrity under dynamic loads and simplifying assembly in tight spaces. The UNC coarse thread and Class 1B fit provide reliable engagement with mating bolts, reducing the risk of thread stripping and ensuring consistent clamping force in industrial welding applications. Its rectangular base enhances stability during the welding process, preventing rotation and misalignment, which is critical for structural components in machinery, automotive frames, and construction equipment. Made from durable steel, it withstands harsh conditions, including exposure to vibrations and thermal cycles, making it a trusted choice for engineers seeking efficiency and longevity in their fastening solutions.

Specification Summary & Compliance

This weld nut adheres to precise dimensional standards, including a Class 1B thread fit for consistent tolerance and the UNC coarse thread system (3/8"-16) per inch measurements. It meets REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) compliance, ensuring environmental safety and suitability for regulated industrial use. The design follows common manufacturing specifications for weld nuts, with a standard barrel profile and rectangular shape optimized for reliable performance.