S-92186A605 5/16"-18 x 6" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 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 load-bearing performance
• Secure external hex drive provides maximum torque transmission and prevents stripping during installation
• Precision Class 2A thread fit ensures smooth assembly and consistent engagement in UNC coarse thread applications
• Optimized partial threading offers superior clamping force distribution across the 6" length
• Comprehensive compliance with ASME B18.2.1 manufacturing standards and environmental regulations (RoHS 3 & REACH)
• Right-hand coarse threading delivers rapid installation and secure fastening in industrial applications

Professional Applications & Engineering Value

This heavy-duty hex head screw in 316 stainless steel addresses critical engineering challenges in corrosive environments where fastener failure is not an option. The external hex drive configuration ensures maximum torque application without cam-out, while the UNC coarse thread design provides superior resistance to vibration loosening in structural applications. The partially threaded shank design concentrates clamping force precisely where needed, making it ideal for machinery assembly, marine equipment, and chemical processing installations where corrosion resistance and mechanical reliability are paramount. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures these fasteners maintain integrity under sustained loads and thermal cycling.

Specification Summary & Compliance

Manufactured to exacting ASME B18.2.1 specifications with Class 2A thread fit tolerance for consistent mating with Class 2B internal threads. Features 5/16"-18 UNC coarse threads with right-hand orientation and 0.3125" thread diameter. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors. The 6" length with 7/8" minimum thread length provides versatile fastening solutions for medium to heavy-duty applications.