S-97345A966 3/4"-10 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and chemical exposure.
• Superior load-bearing capacity with a 70,000 psi tensile strength and 35,000 psi shear strength for demanding, heavy-duty applications.
• Precise alignment and smooth rotation enabled by the 3" shoulder with tight diameter and length tolerances for reduced wear.
• Reliable, vibration-resistant threading thanks to the Class 3A UNC coarse thread fit, ensuring secure fastening in high-stress assemblies.
• Easy installation and removal with a 1/2" hex socket drive and knurled head for improved grip, even with gloves or tools.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and regulatory acceptance.
• Consistent performance and durability backed by Rockwell B79 hardness, maintaining integrity under repeated use.

Professional Applications & Engineering Value

This 3/4"-10 UNC shoulder screw is engineered to address critical challenges in industrial machinery, automation, and precision equipment. The 316 Stainless Steel material offers excellent resistance to corrosion and oxidation, making it suitable for environments exposed to moisture, chemicals, or extreme temperatures. The 3" shoulder length with controlled tolerances provides a stable bearing surface, reducing friction and misalignment in rotating assemblies like pulleys, gears, and linkages. Combined with the Class 3A thread fit and coarse UNC threading, it ensures a secure, vibration-resistant connection that minimizes loosening in high-load scenarios. The socket head with hex drive allows for efficient installation in confined spaces, enhancing assembly speed and maintenance reliability for B2B technical procurement.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for precise, interference-free assembly. The shoulder diameter tolerance is -0.004" to -0.002", and shoulder length tolerance is -0.005" to 0.005", ensuring dimensional accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.