S-97832A134 3/8"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and ensuring long-term reliability.
• Superior strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness, preventing failure under high-stress conditions.
• Precise alignment and smooth rotation thanks to the Class 3A fine thread fit and standard shoulder, minimizing wear and backlash.
• Secure, non-slip installation enabled by the knurled socket head and 1/4" hex drive, allowing for high torque application without stripping.
• Consistent dimensional accuracy with tight shoulder diameter and length tolerances, ensuring reliable performance in assemblies.
• Broad industry compliance meeting ASME B18.3 specifications and environmental standards like RoHS 3 and REACH, simplifying procurement.
• Optimized for fine-adjustment applications with the 3/8"-24 UNF fine thread, providing enhanced clamping force and vibration resistance.

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in precision machinery, automation, and assembly fixtures. The Class 3A UNF fine thread ensures minimal play and superior vibration resistance, crucial for maintaining alignment in dynamic systems. The knurled socket head with a 1/4" hex drive allows for secure, high-torque fastening, reducing the risk of tool slippage and damage during installation. Its high tensile strength and corrosion-resistant material make it ideal for demanding environments, from food processing equipment to aerospace components, where reliability and compliance with ASME B18.3 standards are non-negotiable. By providing a robust, precision-machined shoulder, it simplifies assembly and enhances the longevity of rotating parts and linkages.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit for high precision, with a shoulder diameter tolerance of -0.004" to -0.002" and length tolerance of -0.005" to 0.005". It conforms to ASME B18.3 manufacturing specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in industrial applications.