S-97345A787 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and extended service life
• Precise component alignment and rotation ensured by the 1/2" diameter shoulder with tight tolerances for reliable performance
• High-strength mechanical fastening with 70,000 psi tensile strength and 35,000 psi minimum shear strength for demanding applications
• Secure, high-precision thread engagement provided by the Class 3A UNC coarse thread for easy assembly and vibration resistance
• Easy installation and removal with a 1/4" hex socket drive and knurled head for improved grip and torque application
• Compliance with industry standards including ASME B18.3, ensuring dimensional accuracy and interchangeability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw in 316 stainless steel is engineered to solve critical challenges in precision machinery and industrial assemblies. The knurled socket head and hex drive allow for secure tool engagement, reducing slippage during high-torque installation in confined spaces. Its coarse thread spacing and Class 3A thread fit enable rapid assembly while maintaining tight tolerances, minimizing the risk of loosening under dynamic loads. The precisely machined shoulder acts as a reliable pivot or spacer, ensuring accurate alignment of moving parts in applications like robotics, conveyor systems, and automotive fixtures. With excellent corrosion resistance and high tensile strength, this fastener delivers long-term reliability in demanding environments, from chemical processing to marine equipment.

Specification Summary & Compliance

This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for high precision, a shoulder diameter of 1/2" with tolerance of -0.004" to -0.002", and a shoulder length of 7 1/2" with tolerance of -0.005" to 0.005". It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory adherence for global industrial use.