S-97345A770 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• Exceptional mechanical strength with 70,000 psi tensile and 35,000 psi shear capacity, ensuring reliable performance under heavy loads and vibration.
• Precision Class 3A thread fit for secure, accurate assembly and reduced risk of cross-threading or loosening in critical applications.
• Easy installation and removal with a 5/16" hex drive and knurled head, providing excellent grip and torque transmission without slippage.
• Durable shoulder design featuring a 5/8" diameter and 3/4" length with tight tolerances, offering stable bearing surfaces for pivoting or locating components.
• Broad compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility.
• Versatile UNC coarse threading (3/8"-16) for quick assembly and disassembly, suitable for a wide range of industrial machinery and equipment.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address common industrial challenges such as component misalignment, wear, and corrosion. The precision Class 3A thread fit and UNC coarse threads ensure fast, reliable fastening in high-vibration environments, reducing maintenance downtime. Its robust shoulder design with a 5/8" diameter and 3/4" length provides an exact pivot point or spacer, minimizing play in assemblies like rotating shafts, linkages, and bearings. The knurled head and hex drive facilitate easy handling and torque application, while the material's inherent corrosion resistance makes it suitable for demanding sectors including automotive, aerospace, and food processing. By integrating these features, it delivers long-term durability and performance in heavy-duty industrial applications.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit tolerances for precise engagement, with UNC 3/8"-16 coarse threading per standard specifications. Manufacturing conforms to ASME B18.3, ensuring dimensional accuracy and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally safe and sustainable industrial practices. Key dimensions include a shoulder diameter of 5/8" with a tolerance of -0.004" to -0.002", and a shoulder length of 3/4" with a tolerance of -0.005" to 0.005", guaranteeing consistent performance in precision assemblies.