S-90696A239 9/16"-18 x 2 1/2" ASME B18.3 18-8 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh environments and extended service life
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress
• Precise, secure fastening ensured by the Class 3A thread fit, minimizing the risk of loosening in critical assemblies
• Optimized for high-torque applications featuring a 7/16" hex drive and standard socket head for easy installation and removal
• Fine thread design (9/16"-18 UNF) provides improved adjustment accuracy and superior resistance to vibration
• Versatile partial threading allows for a combination of clamping and alignment functions in complex assemblies
• Full regulatory compliance with ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met

Professional Applications & Engineering Value

This socket head cap screw is engineered to address critical challenges in industrial machinery, automotive systems, and precision equipment. The 18-8 stainless steel material provides excellent resistance to oxidation and chemical exposure, making it suitable for demanding environments where corrosion can compromise fastener integrity. The 9/16"-18 UNF fine thread and Class 3A thread fit deliver superior clamping force and vibration resistance, preventing joint failure in high-stress applications. The combination of a 7/16" hex drive and partially threaded design allows for efficient installation in confined spaces while providing optimal grip and alignment. These features make it an ideal choice for assembly lines, heavy-duty equipment, and applications requiring reliable, long-term fastening solutions.

Specification Summary & Compliance

This socket head cap screw features a 9/16"-18 UNF fine thread with a Class 3A thread fit for high precision and a minimum thread length of 1-1/2". Manufactured in compliance with ASME B18.3 standards, it ensures dimensional accuracy and interchangeability. The product is also RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental and safety regulations for industrial components.