S-97345A792 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 industrial environments and extended service life.
• Exceptional mechanical strength offering 70,000 psi tensile and 35,000 psi shear strength for high-stress, heavy-duty applications.
• Precision alignment and reduced wear ensured by the 5/8" diameter shoulder with tight tolerances for stable component positioning.
• Reliable, vibration-resistant fastening with Class 3A thread fit and coarse UNC threads for secure assembly in dynamic conditions.
• Easy installation and removal facilitated by the knurled socket head and 5/16" hex drive, improving maintenance efficiency.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
• Enhanced durability from Rockwell B79 hardness, providing excellent resistance to deformation under load.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical challenges in precision machinery and assembly systems. The 316 Stainless Steel material delivers outstanding corrosion resistance, making it suitable for applications in chemical processing, marine equipment, and food machinery where exposure to moisture and aggressive substances is common. The socket head design with a knurled texture ensures a firm grip during installation, reducing the risk of tool slippage and damage. The 5/8" shoulder diameter and precise length tolerances provide a stable bearing surface for rotating parts like gears and pulleys, minimizing misalignment and wear. With a Class 3A thread fit and coarse UNC threading, it offers quick assembly and high vibration resistance, essential for automotive, aerospace, and industrial automation systems requiring reliable, long-term performance.

Specification Summary & Compliance

This shoulder screw features a 3/8"-16 UNC thread with Class 3A fit for precise engagement, a shoulder diameter of 5/8" (tolerance: -0.004" to -0.002"), and shoulder length of 1-1/2" (tolerance: -0.005" to 0.005"). Manufactured in compliance with ASME B18.3 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring it is free from hazardous substances and suitable for global industrial use.