S-97832A366 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Enhanced load-bearing capacity from a 70,000 psi tensile strength and 35,000 psi minimum shear strength, ensuring reliable performance under stress.
• Precise assembly and alignment facilitated by the Class 3A thread fit and standard shoulder fit, reducing installation errors and improving component positioning.
• Secure, non-slip fastening with a knurled head and 5/16" hex drive, allowing for high torque application and easy handling even with gloves.
• Long-term durability supported by Rockwell B55 hardness, resisting wear and deformation in high-cycle applications.
• Broad compatibility with UNC coarse threading and ASME B18.3 standards, ensuring interchangeability and ease of sourcing in maintenance and production.
• Environmental and safety compliance with RoHS 3 and REACH regulations, making it suitable for global supply chains and sensitive applications.

Professional Applications & Engineering Value

This socket head shoulder screw is engineered to address critical alignment and rotational motion challenges in industrial machinery, such as conveyor systems, robotic arms, and precision instruments. The 2-1/2" shoulder length provides a stable bearing surface for moving parts, minimizing friction and wear on connected components. Made from 18-8 stainless steel, it offers excellent resistance to rust and corrosion, which is vital in humid or chemically exposed settings like food processing or marine equipment. The Class 3A thread fit and UNC coarse thread ensure quick, secure fastening, reducing assembly time and preventing loosening under vibration. With a knurled head texture and hex drive, it allows for firm grip and efficient installation, enhancing productivity in automated or manual setups while meeting stringent ASME B18.3 specifications for reliability.

Specification Summary & Compliance

This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for high precision, a shoulder diameter of 5/8" (tolerance: -0.004" to -0.002"), and shoulder length of 2-1/2" (tolerance: -0.005" to 0.005"). It complies with ASME B18.3 manufacturing standards and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations.