S-92186A726 1/2"-13 x 3 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for chemical processing and marine applications
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration, reducing failure risks
• Class 2A thread fit provides consistent assembly with standard nuts, minimizing cross-threading and improving installation efficiency
• Coarse UNC threading offers faster installation and better debris resistance compared to fine threads, saving labor time
• Partially threaded design allows for precise clamping force control, preventing joint loosening in dynamic applications
• External hex drive enables high-torque application with common tools, ensuring secure fastening in confined spaces
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality consistency and environmental safety for regulated industries

Professional Applications & Engineering Value

This 316 stainless steel hex head screw is engineered to address critical challenges in demanding industrial settings, such as equipment corrosion and structural integrity. The 1/2"-13 UNC coarse thread design ensures rapid assembly in high-vibration environments like machinery frames and construction assemblies, while the partial threading concentrates clamping force precisely to prevent joint slippage. With a Rockwell B70 hardness and 70,000 psi tensile strength, it withstands extreme mechanical stress in heavy-duty applications, including marine hardware, chemical processing plants, and outdoor infrastructure. The external hex drive facilitates efficient installation with standard wrenches, reducing downtime. Compliant with ASME B18.2.1 and environmental standards, it delivers reliable performance for OEMs and maintenance teams seeking durability and regulatory adherence.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit per UNC standards, ensuring dimensional accuracy and interchangeability. It meets ASME B18.2.1 specifications for hex head bolts, with a length of 3 1/2" and partial threading up to 1 1/4". The product is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, confirming it is free from hazardous substances and suitable for global industrial use.