S-92488A428 1/4"-20 x 1 1/4" ASME B18.3 High-Strength 316 Stainless Steel Socket 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 offering 110,000 psi tensile strength and Rockwell C25 hardness for reliable, high-stress applications
• Precise thread engagement with Class 3A fit and UNC coarse threading, ensuring secure fastening and vibration resistance
• Efficient installation and removal using a standard 3/16" hex drive, allowing for high torque application in confined spaces
• Full thread coverage along the 1-1/4" length, providing consistent clamping force and versatile positioning
• Cold worked fabrication enhances grain structure for improved durability and fatigue resistance under dynamic loads
• Compliance with major industry standards including ASME B18.3, ensuring dimensional accuracy and interchangeability

Professional Applications & Engineering Value

This 316 Stainless Steel Socket Head Cap Screw is engineered to address critical challenges in demanding industrial settings. Its corrosion-resistant properties make it suitable for marine, chemical processing, and food industry applications where moisture and aggressive substances are present. The UNC coarse thread and Class 3A fit provide superior holding power, reducing the risk of loosening under vibration—common in machinery, automotive assemblies, and heavy equipment. The hex socket drive allows for flush mounting and high torque application, essential for compact designs and maintenance accessibility. With a fully threaded shank and cold worked structure, it delivers consistent performance in dynamic load conditions, ensuring long-term reliability and reducing downtime for industrial fastener replacements.

Specification Summary & Compliance

This socket head cap screw adheres to ASME B18.3 specifications, ensuring precise dimensional standards for 1/4"-20 UNC thread with a Class 3A thread fit for tight tolerance applications. It is manufactured via cold worked processes to achieve the stated mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environments with strict environmental and safety requirements.