S-97832A135 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Enhanced load-bearing capacity thanks to 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
• Precise assembly and alignment with Class 3A thread fit and fine UNF threads, reducing the risk of cross-threading and improving joint integrity.
• Secure, non-slip installation via the knurled socket head and 1/4" hex drive, allowing for high-torque application without tool slippage.
• Accurate component positioning with a 1-3/4" shoulder length and tight diameter tolerance, providing stable support for rotating parts.
• Consistent performance and durability backed by Rockwell B55 hardness, resisting wear and deformation under stress.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.

Professional Applications & Engineering Value

This shoulder screw is engineered to address common industrial challenges such as misalignment, vibration loosening, and corrosion in mechanical assemblies. The 18-8 stainless steel material offers excellent resistance to rust and chemicals, making it ideal for use in machinery, automotive, and electronic equipment where exposure to moisture or corrosive agents is a concern. The fine UNF threads and Class 3A fit provide a tight, secure connection that minimizes backlash and maintains precision in high-stress applications. The knurled socket head with a 1/4" hex drive ensures easy, reliable installation even in confined spaces, reducing assembly time and improving workflow efficiency. By integrating these features, this shoulder screw delivers reliable performance in pivots, spacers, and rotating mechanisms, enhancing overall system longevity and reducing maintenance costs.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high precision, with thread specifications of 3/8"-24 UNF and a shoulder diameter tolerance of -0.004" to -0.002". It meets ASME B18.3 manufacturing standards and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance in global markets.