S-97345A664 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for chemical, marine, and outdoor applications.
• Exceptional dimensional stability and precision alignment with a Class 3A thread fit and controlled shoulder tolerances, ensuring reliable performance in assemblies.
• High mechanical strength with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding load-bearing applications.
• Secure, non-slip installation enabled by the knurled head and 1/4" hex drive, allowing for high torque application without tool slippage.
• Optimized for fine-adjustment and vibration resistance with a 3/8"-24 UNF fine thread, providing a secure hold in dynamic conditions.
• Guaranteed interchangeability and reliability as it meets ASME B18.3 specifications, ensuring consistent quality and fit.
• Safe for regulated industries with full compliance to RoHS 3 and REACH standards, supporting global environmental and safety regulations.

Professional Applications & Engineering Value

This 316 Stainless Steel Shoulder Screw is engineered to address critical challenges in precision machinery and industrial equipment. The 1/2" shoulder diameter and 3/4" shoulder length with tight tolerances provide a stable pivot or bearing surface, minimizing misalignment and wear in rotating assemblies. The UNF fine thread (3/8"-24) and Class 3A fit ensure secure fastening in high-vibration environments, such as robotics, automotive systems, and conveyor equipment. Made from corrosion-resistant 316 stainless steel, it withstands aggressive chemicals and moisture, making it ideal for food processing, marine, and pharmaceutical applications. The socket head with hex drive and knurled texture facilitates easy installation and removal, even in confined spaces, enhancing maintenance efficiency and reducing downtime.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a Class 3A thread fit for superior accuracy and a shoulder diameter tolerance of -0.004" to -0.002". It conforms to ASME B18.3 for manufacturing consistency and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global supply chain integration.