S-97832A361 1/2"-13 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 extended service life.
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear strength, ensuring reliable performance under high-stress conditions.
• Precision alignment and secure pivoting provided by the 5/8" diameter shoulder with tight tolerance, minimizing component wear and misalignment.
• High-accuracy Class 3A thread fit on the 1/2"-13 UNC coarse thread for secure, vibration-resistant fastening in demanding assemblies.
• Easy installation and removal with the 5/16" hex socket drive and knurled head, allowing for high torque application and improved grip.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety for global supply chains.
• Optimized for heavy-duty applications with a robust Rockwell B55 hardness and a long 1 5/8" shoulder length for stable mounting of moving parts.

Professional Applications & Engineering Value

This stainless steel shoulder screw is engineered to address critical alignment and durability challenges in industrial machinery, automation systems, and precision equipment. The 18-8 stainless steel material offers excellent resistance to rust and corrosion, making it suitable for washdown environments or outdoor use. The precision shoulder with a diameter of 5/8" acts as a dependable pivot or axle, reducing bushing wear and maintaining exact part positioning. Combined with the 1/2"-13 UNC coarse thread and Class 3A fit, it ensures a secure, vibration-proof connection that withstands dynamic loads. The knurled head and hex socket drive facilitate quick assembly and disassembly, enhancing maintenance efficiency in production lines and heavy-duty applications.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC Class 3A thread with precise dimensional tolerances (e.g., shoulder diameter tolerance of -0.004" to -0.002"). It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards for industrial use.