S-97832A297 5/16"-24 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and extended service life.
• High-strength performance offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications.
• Precise alignment and pivot function ensured by the 3/8" shoulder with controlled diameter and length tolerances.
• Excellent torque transmission and grip provided by the knurled socket head and hex drive, reducing tool slippage.
• Reliable, fine-thread engagement with the 5/16"-24 UNF Class 3A thread fit for vibration resistance and secure fastening.
• Industry-standard compliance with ASME B18.3, ensuring interchangeability and quality in mechanical assemblies.
• Environmental and safety adherence meeting RoHS 3 and REACH standards for responsible manufacturing.

Professional Applications & Engineering Value

This shoulder screw is engineered to address critical alignment and pivot needs in industrial machinery, automation systems, and precision equipment. The 18-8 Stainless Steel material provides excellent resistance to corrosion and oxidation, making it suitable for environments exposed to moisture or chemicals. The 3/8" shoulder length and precise diameter tolerances allow for accurate positioning of moving parts, such as gears, levers, and bearings, reducing wear and ensuring smooth operation. The knurled socket head with a hex drive enhances torque application, minimizing the risk of stripping during assembly. With a Class 3A thread fit and UNF fine thread, it offers superior holding power in high-vibration applications, preventing loosening over time. This screw is a reliable choice for engineers seeking durability, precision, and compliance in demanding mechanical assemblies.

Specification Summary & Compliance

This shoulder screw features a 5/16"-24 UNF fine thread with a Class 3A thread fit for high precision and strength. The shoulder has a diameter of 3/8" with a tolerance of -0.004" to -0.002" and a length of 3/8" with a tolerance of -0.005" to 0.005", ensuring consistent performance. It is manufactured in accordance with ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards.