S-92198A513 3/8"-16 x 20" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and long-term outdoor use.
• High-strength reliability with 80,000 psi tensile strength and Rockwell B70 hardness for demanding structural and heavy-duty applications.
• Secure and efficient installation featuring an external hex drive and 9/16" head width for high-torque application with standard tools.
• Optimized load distribution through a partially threaded shank with a 1 1/4" minimum thread length, reducing stress concentration.
• Precise and durable threading with UNC coarse thread and Class 2A fit, ensuring consistent engagement and vibration resistance.
• Compliance with industry standards including ASME B18.2.1 for dimensional accuracy and RoHS/REACH for environmental safety.
• Versatile right-hand coarse thread design for quick assembly and disassembly in a wide range of industrial machinery and equipment.

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw is engineered to address critical challenges in industrial fastening, where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel material provides excellent protection against rust and chemical exposure, making it suitable for marine, chemical processing, and outdoor construction applications. Its partially threaded design concentrates the thread engagement where it's needed most, minimizing the risk of thread stripping under heavy loads while the coarse UNC thread ensures rapid installation and reliable performance in high-vibration environments. With an external hex drive and substantial 20" length, it offers superior clamping force for large-scale assemblies, structural frames, and heavy machinery, ensuring long-term durability and safety compliance.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit for consistent dimensional accuracy and features a 3/8"-16 UNC coarse thread with a right-hand direction. It is manufactured in compliance with ASME B18.2.1 specifications, ensuring reliable performance in mechanical and structural applications. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety standards for global industrial use.