S-97345A723 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 and marine environments
• Exceptional mechanical strength with 70,000 psi tensile strength and 35,000 psi shear strength for reliable performance under high stress
• Precise assembly and alignment ensured by the Class 3A thread fit and tightly toleranced shoulder diameter for minimal play
• Secure, non-slip fastening provided by the knurled socket head and 1/4" hex drive, allowing for high torque application
• Broad industry compatibility with UNC coarse threads and right-hand direction, facilitating quick installation and replacement
• Long-term operational reliability backed by Rockwell B79 hardness, resisting wear and deformation in dynamic applications
• Global regulatory compliance with ASME B18.3 standards, RoHS 3, and REACH, ensuring safe and approved use in various markets

Professional Applications & Engineering Value

This 316 stainless steel shoulder screw is engineered to address critical alignment and pivot point challenges in precision machinery. Its 1/2" shoulder diameter with tight tolerances (±0.005") provides a stable bearing surface, reducing wear on mating components and maintaining precise positioning in assemblies like rotating shafts, linkages, and guiding systems. The Class 3A thread fit and UNC coarse thread ensure secure engagement and vibration resistance, while the knurled socket head with hex drive allows for efficient installation in confined spaces. Ideal for applications in automation, automotive, and aerospace, this fastener delivers consistent performance, minimizing downtime and maintenance costs in demanding industrial fastener applications.

Specification Summary & Compliance

This shoulder screw adheres to Class 3A thread fit and UNC thread standards for precise engagement. Manufacturing conforms to ASME B18.3 specifications, with shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005". The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material restrictions are met for global industrial use.