S-92196A326 5/16"-18 x 4 1/4" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Superior mechanical strength with a 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high-stress conditions.
• Precise and secure fastening ensured by the Class 3A thread fit, providing tighter tolerances for reduced risk of loosening in critical assemblies.
• High-torque installation capability with the 1/4" hex drive and standard socket head, allowing for easy access in confined spaces and secure driver engagement.
• Optimized for quick assembly thanks to the 5/16"-18 UNC coarse thread, which resists cross-threading and speeds up installation.
• Versatile partial threading design offers an unthreaded shoulder for precise alignment and increased shear strength in pivoting or structural joints.
• Guaranteed quality and safety compliance meeting ASME B18.3 specifications and being RoHS 3 & REACH compliant for use in regulated industries.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Socket Head Cap Screw is engineered to address common industrial challenges such as vibration-induced loosening and material fatigue. Its high tensile strength and Class 3A thread fit provide a secure, reliable hold in demanding applications like heavy machinery, automotive assemblies, and precision equipment. The coarse UNC thread and partially threaded shank enhance assembly speed and component alignment, reducing installation errors. The corrosion-resistant stainless steel material ensures long-term durability, even in corrosive environments, making it a cost-effective solution for maintenance and OEM projects where failure is not an option.

Specification Summary & Compliance

This screw adheres to precise dimensional standards with a Class 3A thread fit and UNC coarse thread (5/16"-18). It is manufactured in compliance with the ASME B18.3 specification and conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring it is free from hazardous substances and suitable for global industrial supply chains.