S-91273A202 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments.
• Enhanced torque application and reduced tool slippage thanks to the knurled hex socket head design.
• High mechanical strength and durability with a tensile strength of 70,000 psi and Rockwell B55 hardness.
• Reliable and precise assembly ensured by the Class 2A thread fit and standard shoulder fit for consistent alignment.
• Broad compatibility with coarse UNC threads and right-hand direction for common industrial applications.
• Secure fastening under shear loads with a minimum shear strength of 35,000 psi for demanding mechanical setups.
• Environmental and regulatory compliance meeting RoHS 3 and REACH standards for safe, sustainable use.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address critical alignment and mounting challenges in precision assemblies. The 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for applications in machinery, automotive, and electronics where exposure to moisture or chemicals is a concern. The knurled hex socket head ensures a firm grip during installation, reducing the risk of stripping and allowing for high-torque fastening without slippage. With a coarse thread and Class 2A thread fit, it offers quick assembly and reliable performance in dynamic environments, supporting components like bearings, pulleys, and linkages where the shoulder acts as a precise pivot or spacer. This design minimizes misalignment and wear, enhancing the longevity and reliability of your equipment.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. Key specifications include a thread size of 3/8"-16, shoulder diameter of 3/8" with a tolerance of -0.004" to -0.002", and shoulder length of 1/8" with a tolerance of -0.005" to 0.005". It is manufactured to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial use.