S-97832A369 3/8"-16 ASME B18.3 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments and reducing replacement frequency.
• Enhanced load-bearing capacity from a 70,000 psi tensile strength and 35,000 psi minimum shear strength, ensuring reliable performance under stress.
• Precise alignment and reduced wear due to the 5/8" shoulder diameter with tight tolerances, maintaining component positioning in assemblies.
• Secure, non-slip installation with a knurled socket head and 5/16" hex drive, allowing for high torque application without tool slippage.
• Consistent thread engagement through Class 3A thread fit and 3/8"-16 UNC coarse threads, providing vibration resistance and quick assembly.
• Broad regulatory compliance including ASME B18.3, RoHS 3, and REACH, ensuring safety and environmental standards are met for global use.
• Durable mechanical properties with Rockwell B55 hardness, offering excellent wear resistance and longevity in repetitive applications.

Professional Applications & Engineering Value

This shoulder screw is engineered to address common challenges in precision machinery, such as misalignment and component wear. The 18-8 Stainless Steel material provides inherent corrosion resistance, making it suitable for applications in humid or chemically exposed environments like food processing or marine equipment. The 5/8" shoulder diameter acts as a precise pivot or spacer, reducing friction and maintaining alignment in rotating assemblies, while the Class 3A thread fit and coarse UNC threads ensure reliable fastening in high-vibration settings, such as automotive or industrial automation systems. The knurled socket head with a hex drive enhances grip during installation, minimizing the risk of stripping and improving maintenance efficiency. By integrating these features, this screw delivers consistent performance in demanding industrial shoulder bolt applications, from conveyor systems to precision instruments.

Specification Summary & Compliance

This shoulder screw adheres to tight dimensional tolerances, including a shoulder diameter tolerance of -0.004" to -0.002" and shoulder length tolerance of -0.005" to 0.005", ensuring precision in assembly. It features a Class 3A thread fit for superior thread engagement and is manufactured according to ASME B18.3 standards. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safe industrial use.