S-92196A398 1/2"-20 x 4 1/2" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh environments and reducing replacement frequency
• Exceptional tensile strength of 70,000 psi ensures reliable performance under high-stress conditions and prevents fastener failure
• Precise Class 3A thread fit guarantees tighter tolerances for secure, vibration-resistant assemblies in critical applications
• 3/8" hex drive and standard socket head provide easy installation and high torque transmission without stripping
• Fine thread spacing (UNF) offers improved adjustment precision and superior clamping force compared to coarse threads
• Rockwell B70 hardness enhances wear resistance and maintains thread integrity through repeated use
• Compliance with ASME B18.3, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for global sourcing

Professional Applications & Engineering Value

This 18-8 Stainless Steel Socket Head Cap Screw is engineered to address common industrial challenges such as corrosion-induced degradation and mechanical loosening in high-vibration environments. The Class 3A thread fit and 1/2"-20 UNF fine threads deliver superior clamping force and precision alignment, making it ideal for machinery, automotive, and aerospace assemblies where reliability is critical. The partially threaded design allows for optimal load distribution, while the Rockwell B70 hardness and 70,000 psi tensile strength ensure long-term durability under dynamic loads. Its corrosion-resistant properties reduce maintenance needs in humid or chemical-exposed settings, providing consistent performance in industrial fastening applications.

Specification Summary & Compliance

This socket head cap screw features a 1/2"-20 UNF thread with Class 3A fit for high precision, a 3/8" hex drive, and a length of 4 1/2". It is manufactured in compliance with ASME B18.3 standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safety and consistency for industrial use.