S-97345A976 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 industrial and marine environments.
• Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi minimum shear strength for reliable performance in high-stress applications.
• Precise alignment and smooth rotation ensured by the 6" shoulder with tight length tolerance (±0.005") and controlled shoulder diameter tolerance.
• Secure, high-precision threading with Class 3A UNC coarse thread fit, providing excellent vibration resistance and assembly reliability.
• Easy installation and removal using the 1/2" hex drive socket head and knurled texture for enhanced grip, even with gloves.
• Compliance with global standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and regulatory acceptance for international projects.
• Durable and wear-resistant material with Rockwell B79 hardness, maintaining integrity under repeated use and mechanical loads.

Professional Applications & Engineering Value

This socket head shoulder screw is engineered to address critical alignment and durability challenges in demanding industrial applications. The 316 stainless steel provides excellent corrosion resistance, making it suitable for environments exposed to moisture, chemicals, and extreme temperatures. The 6" shoulder length with tight tolerances ensures precise component positioning in machinery, pivots, and rotating assemblies, reducing wear and misalignment. The UNC coarse thread and Class 3A fit offer superior holding power and vibration resistance, essential for heavy-duty equipment, automotive jigs, and conveyor systems. Combined with the knurled head and hex drive, it allows for quick, secure installation, enhancing productivity and reducing maintenance downtime in precision engineering and assembly operations.

Specification Summary & Compliance

This shoulder screw adheres to ASME B18.3 specifications, with a 3/4"-10 UNC thread in Class 3A fit for high precision. The shoulder diameter tolerance is controlled between -0.004" to -0.002", and shoulder length tolerance is ±0.005". It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and global market acceptance.