S-92186A560 1/4"-20 x 4 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-term fastening
• Optimized coarse UNC threading ensures faster installation and reduced risk of cross-threading in industrial assemblies
• Class 2A thread fit provides consistent, precise engagement with nuts and tapped holes, minimizing assembly issues
• External hex drive design allows for high-torque application using standard tools, enhancing installation efficiency
• Partial threading offers unthreaded shank for precise clamping and shear strength in structural applications
• Full regulatory compliance with ASME B18.2.1, RoHS 3, and REACH standards, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This 316 stainless steel hex head screw delivers critical performance in demanding industrial settings where corrosion resistance and structural integrity are paramount. The UNC coarse thread design accelerates installation in metal framing, machinery, and construction projects, while the partial threading provides enhanced shear resistance for load-bearing joints. With a 70,000 psi tensile strength and Rockwell B70 hardness, it withstands vibration and dynamic loads in marine, chemical processing, and outdoor infrastructure. The external hex drive ensures secure tool engagement for high-torque applications, reducing slippage and maintenance downtime. Engineered to ASME B18.2.1 specifications, this screw offers reliable fastening solutions for OEMs and MRO professionals seeking durability and compliance.

Specification Summary & Compliance

This 1/4"-20 UNC hex head screw features a Class 2A thread fit for precise dimensional accuracy and consistent performance. Manufactured in compliance with ASME B18.2.1 standards, it ensures interchangeability and reliability in industrial fastening systems. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substance restrictions.