S-97345A262 3/8"-16 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 extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance under high stress.
• Precise alignment and location ensured by the 1/2" shoulder diameter with tight tolerances, minimizing component misalignment.
• Secure and easy installation with a 1/4" hex drive and knurled socket head, providing excellent grip and reducing tool slippage.
• High-accuracy thread engagement via Class 3A thread fit and 3/8"-16 UNC coarse thread, ensuring consistent fastening and vibration resistance.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and environmental safety for global applications.
• Durable and wear-resistant design with Rockwell B79 hardness, maintaining integrity in repetitive assembly and disassembly cycles.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery, automation systems, and industrial equipment. The knurled socket head with a 1/4" hex drive allows for secure torque application, reducing the risk of stripping and enhancing operator safety. Its 3/8"-16 UNC coarse thread and Class 3A thread fit provide reliable fastening in high-vibration environments, preventing loosening over time. The precisely machined shoulder with a diameter of 1/2" acts as a stable pivot or spacer, ensuring accurate alignment of moving parts like gears and pulleys. Made from corrosion-resistant 316 stainless steel, it withstands exposure to chemicals, moisture, and extreme temperatures, making it suitable for food processing, marine applications, and medical devices. This combination of high tensile strength and durable design minimizes downtime and maintenance costs, delivering long-term value in demanding B2B settings.

Specification Summary & Compliance

This shoulder screw adheres to strict dimensional tolerances, including a Class 3A thread fit for high precision and a shoulder diameter tolerance of -0.004" to -0.002". It conforms to ASME B18.3 manufacturing standards, ensuring consistent quality and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and restricted substance-free usage in industrial applications.