S-97345A703 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.
• Exceptional mechanical strength offering 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance under high stress.
• Precision shoulder fit with tight diameter and length tolerances ensures accurate alignment and smooth rotation in assemblies.
• High-reliability thread engagement with Class 3A fit and coarse UNC thread for secure fastening and vibration resistance.
• Easy installation and removal featuring a knurled socket head with 1/4" hex drive for superior grip and torque application.
• Compliance with major standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety.
• Versatile right-hand coarse thread (3/8"-16 UNC) designed for quick assembly in a wide range of industrial applications.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in precision machinery and industrial equipment. The precision shoulder diameter (1/2") and length (5/8") with controlled tolerances provide a stable pivot point or spacer, reducing wear and misalignment in rotating assemblies. The coarse UNC thread and Class 3A fit ensure robust, vibration-resistant connections, crucial for applications like linkages, bearings, and pivoting mechanisms. Its knurled socket head allows for high-torque installation without slippage, enhancing assembly efficiency. Made from corrosion-resistant 316 stainless steel, it performs reliably in demanding environments, from food processing to marine applications, ensuring long-term durability and reduced maintenance costs.

Specification Summary & Compliance

This shoulder screw features a Class 3A thread fit for high-precision engagement and a shoulder diameter tolerance of -0.004" to -0.002" with length tolerance of -0.005" to 0.005" for consistent performance. It conforms to ASME B18.3 specifications and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safety and regulatory adherence for industrial use.