S-92196A658 1/4"-28 x 7/16" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and reducing maintenance costs.
• Superior load-bearing capability from a 70,000 psi tensile strength, ensuring reliable performance under high stress.
• Precise and secure fastening with Class 3A UNF fine threads, minimizing the risk of loosening in critical assemblies.
• Enhanced durability and wear resistance provided by Rockwell B70 hardness, extending the screw's service life.
• Efficient installation and removal using the 3/16" hex drive, allowing for high torque application in confined spaces.
• Full thread engagement along the 7/16" length for maximum grip and uniform stress distribution.
• Compliance with major industry standards including ASME B18.3, ensuring interchangeability and reliability in professional applications.

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 corrosion in demanding environments. The Class 3A UNF fine thread provides a tighter fit than coarse threads, which is critical in precision machinery, automotive, and aerospace assemblies where minimal backlash is required. The corrosion-resistant material ensures long-term integrity in humid or chemically aggressive settings, reducing downtime and replacement frequency. Its high tensile strength and Rockwell B70 hardness make it suitable for high-stress applications, from heavy equipment to electronic enclosures, ensuring that your fastening solutions contribute to overall system durability and safety.

Specification Summary & Compliance

This socket head cap screw features a 1/4"-28 UNF Class 3A thread with fine spacing and right-hand direction, ensuring precise dimensional accuracy as per ASME B18.3 specifications. It is fully threaded and measures 7/16" in length, with a head diameter of 3/8" and a 3/16" hex drive. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to environmental and safety standards for use in various global markets.