S-97345A963 3/4"-10 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments including marine and chemical processing applications.
• Enhanced precision and load distribution from the 2" shoulder with tight diameter tolerance, minimizing misalignment and wear in rotating assemblies.
• High-strength performance under stress with 70,000 psi tensile strength and 35,000 psi minimum shear strength, ensuring reliability in heavy-duty machinery.
• Secure, vibration-resistant fastening thanks to the Class 3A thread fit and coarse 3/4"-10 UNC thread, providing excellent grip and ease of assembly.
• Easy installation and removal with the 1/2" hex drive and knurled socket head, allowing for high torque application without slippage.
• Long-term durability and hardness with Rockwell B79 rating, maintaining integrity under repeated use and mechanical loads.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental responsibility in global supply chains.

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical challenges in industrial applications where precision, strength, and corrosion resistance are paramount. The 2" shoulder length and 7/8" shoulder diameter with tight tolerances provide stable alignment for rotating parts like bearings, pulleys, and gears, reducing wear and preventing operational failures. The coarse 3/4"-10 UNC thread with Class 3A fit ensures quick, secure fastening in high-vibration environments, such as automotive assemblies and heavy machinery. Made from 316 stainless steel, it excels in corrosive settings, including marine and chemical processing, while the knurled socket head and 1/2" hex drive facilitate efficient maintenance. This screw delivers reliable performance, minimizing downtime and enhancing the longevity of precision engineering systems.

Specification Summary & Compliance

This shoulder screw features precise dimensions, including a Class 3A thread fit for superior engagement and a shoulder diameter tolerance of -0.004" to -0.002" with length tolerance of -0.005" to 0.005" to ensure accurate assembly. It adheres to ASME B18.3 standards for consistency and safety, and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for environmentally conscious industrial use.