S-90696A155 0-80 x 7/8" 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 long-term reliability.
• Exceptional thread precision with Class 3A fit and UNF fine thread, ensuring secure, vibration-resistant connections in precision assemblies.
• High mechanical strength offering 70,000 psi tensile strength and Rockwell B70 hardness for dependable performance under load.
• Optimized for confined spaces featuring a compact socket head and hex drive for easy installation with standard tools.
• Reliable partial threading providing a strong non-threaded shank for precise clamping and alignment in assemblies.
• Broad industrial compliance meeting ASME B18.3 standards, RoHS 3, and REACH for safe, regulated use.
• Versatile right-hand threading designed for standard assembly processes, enhancing installation efficiency.

Professional Applications & Engineering Value

This 0-80 UNF socket head cap screw is engineered to address critical challenges in precision machinery, electronics, and aerospace applications where space is limited and reliability is non-negotiable. The 18-8 stainless steel material provides excellent resistance to rust and oxidation, reducing maintenance needs in humid or corrosive settings. Its fine UNF thread and Class 3A thread fit deliver superior holding power, minimizing the risk of loosening under vibration—common in dynamic industrial equipment. The hex drive socket head allows for high torque application with minimal head protrusion, making it ideal for compact assemblies. By combining high tensile strength and partial threading, this fastener ensures precise component alignment and robust performance in demanding engineering environments.

Specification Summary & Compliance

This screw adheres to Class 3A thread fit for high precision, manufactured in accordance with ASME B18.3 specifications. It features a 0-80 UNF fine thread with a minimum thread length of 1/2" and overall length of 7/8". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for industrial use.