S-97345A875 5/8"-11 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced grip and reduced tool slippage thanks to the knurled socket head design, ensuring secure fastening operations.
• High load-bearing capacity with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding mechanical assemblies.
• Precise alignment and smooth rotation provided by the 3/4" diameter shoulder, minimizing wear on connected components.
• Reliable thread engagement with Class 3A fit and coarse UNC thread, offering excellent vibration resistance and quick assembly.
• Broad compatibility with standard 3/8" hex tools, facilitating easy installation and maintenance in various equipment.
• Compliance with global standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This 5/8"-11 UNC shoulder screw is engineered to address critical challenges in industrial settings, such as misalignment and component wear. The 316 Stainless Steel material provides exceptional resistance to corrosion from chemicals, moisture, and salt, making it perfect for marine, chemical processing, and food industry applications. Its socket head with knurled texture ensures a firm grip, reducing the risk of tool cam-out during high-torque installations. The Class 3A thread fit and coarse UNC thread type deliver robust performance in high-vibration environments, preventing loosening in machinery, conveyor systems, and precision instruments. The integrated shoulder acts as a precise pivot or spacer, enhancing the longevity of assemblies by distributing loads evenly and minimizing friction.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a shoulder diameter of 3/4" with a tolerance of -0.004" to -0.002" and a shoulder length of 1 7/8" with a tolerance of -0.005" to 0.005". The thread is 5/8"-11 UNC with a Class 3A fit for high accuracy. It complies with ASME B18.3 standards for consistency and reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations.