S-97832A261 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 environments and reducing maintenance costs.
• Precise component alignment ensured by a 3/4" shoulder diameter with tight tolerances, minimizing assembly errors and improving machine reliability.
• High torque transmission and secure grip from the knurled socket head and 3/8" hex drive, preventing stripping and enabling efficient installation.
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi minimum shear strength, supporting heavy-duty applications without failure.
• Reliable thread engagement due to Class 3A fit and 1/2"-13 UNC coarse threads, providing vibration resistance and easy assembly in industrial settings.
• Long-lasting durability from Rockwell B55 hardness, resisting wear and extending service life in high-stress operations.
• Compliance with industry standards including ASME B18.3 and environmental regulations, ensuring quality and safety for global supply chains.

Professional Applications & Engineering Value

This 18-8 Stainless Steel shoulder screw is engineered to address critical challenges in machinery and equipment assembly. The 3/4" shoulder diameter with precise tolerances acts as a reliable pivot or bearing surface, eliminating misalignment in rotating parts like conveyor systems or robotic arms. Its 1/2"-13 UNC coarse threads and Class 3A fit ensure secure fastening under dynamic loads, reducing the risk of loosening in high-vibration environments such as automotive or aerospace components. The knurled socket head with a hex drive enhances torque application, speeding up maintenance while preventing slippage. Made from corrosion-resistant material, it excels in damp or chemical-exposed settings, offering a robust solution for precision shoulder bolt needs in industrial and manufacturing sectors.

Specification Summary & Compliance

This shoulder screw features a 1/2"-13 UNC thread with Class 3A fit for high precision, and a shoulder diameter of 3/4" with tolerances from -0.004" to -0.002". It meets ASME B18.3 specifications for dimensional accuracy and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe and sustainable use.