S-8077A527 5/8"-11 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel construction, ideal for harsh environments and extended service life
• Superior wear resistance and reduced light reflection provided by the Black Oxide finish, enhancing durability and operator comfort
• High-strength performance with 70,000 psi tensile strength and 35,000 psi shear strength for reliable use in heavy-duty applications
• Precise alignment and pivot function enabled by the 6-inch shoulder with controlled diameter and length tolerances
• Secure, non-slip installation thanks to the knurled socket head and standard hex drive, allowing for high torque application
• Reliable, precision thread engagement with a Class 3A fit and coarse UNC thread for quick assembly and robust fastening
• Guaranteed quality and safety compliance meeting ASME B18.3 specifications and RoHS/REACH environmental regulations

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to solve critical alignment and pivot challenges in demanding industrial settings. The 316 Stainless Steel material offers superior resistance to chemicals and moisture, making it perfect for marine, chemical processing, and food-grade equipment. The 6-inch shoulder length provides a stable, unthreaded bearing surface that ensures precise component location, reduces wear on moving parts, and prevents thread damage during assembly. Combined with the Black Oxide finish for added corrosion protection and the socket head with knurled texture for secure tool grip, this screw delivers reliable performance in high-stress applications such as machinery linkages, rotating assemblies, and precision jigs. Its right-hand coarse thread and Class 3A fit ensure fast, secure installation, reducing assembly time and maintenance needs.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, featuring a Class 3A thread fit for high-precision assembly and a shoulder diameter tolerance of -0.004" to -0.002" with a length tolerance of -0.005" to 0.005". It conforms to the ASME B18.3 standard for socket head shoulder screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.