S-90337A497 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel and passivated finish for long-lasting performance in harsh industrial environments.
• Precise component alignment ensured by the 1/2" shoulder diameter with tight tolerance (-0.001" to 0") and smooth texture for accurate positioning.
• High-strength durability with 70,000 psi tensile strength and Rockwell B55 hardness to withstand heavy loads and repetitive use.
• Secure and reliable fastening via Class 2A UNC coarse threads and low socket hex drive for easy installation and vibration resistance.
• Streamlined assembly process thanks to the right-hand thread and 1/4" hex drive enabling quick, tool-friendly engagement.
• Compliance with global standards including RoHS 3 and REACH, ensuring safe, eco-friendly use in regulated industries.
• Optimized for compact spaces with a low-profile socket head design, ideal for applications with limited clearance.

Professional Applications & Engineering Value

This precision shoulder screw is engineered to solve critical alignment challenges in mechanical assemblies, such as in robotics, automotive systems, and precision machinery. The 18-8 Stainless Steel construction, combined with a passivated finish, provides superior resistance to corrosion and wear, extending service life in demanding conditions. The precisely machined 1/2" shoulder diameter with minimal tolerance ensures exact part location, reducing misalignment and improving overall assembly accuracy. With a Class 2A thread fit and UNC coarse threads, it offers reliable, vibration-resistant fastening, while the low socket head and hex drive facilitate easy installation in tight spaces. Ideal for applications requiring repeatable precision, this screw enhances performance in industries where durability and exact alignment are paramount.

Specification Summary & Compliance

This shoulder screw adheres to Class 2A thread fit and UNC thread standards, ensuring dimensional accuracy and interchangeability. Key specifications include a shoulder diameter tolerance of -0.001" to 0" and shoulder length tolerance of 0" to 0.002" for precise engineering applications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for use in environmentally conscious and regulated industrial settings.