S-92185A126 4-40 x 1 1/2" Super-Corrosion-Resistant 316 Stainless Steel Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel and passivated finish, ideal for harsh environments and extended service life.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads and vibration, reducing failure risks.
• Precise Class 3A thread fit provides excellent engagement and consistent clamping force for secure assemblies.
• Coarse 4-40 UNC threads enable faster installation and better debris resistance in industrial applications.
• Secure hex drive (3/32") allows for high torque application and easy access in confined spaces.
• Partially threaded design offers optimal grip and alignment control for varied mounting requirements.
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards.

Professional Applications & Engineering Value

This 316 stainless steel socket head cap screw is engineered to address critical challenges in demanding sectors like marine, chemical processing, and food equipment, where corrosion resistance and high strength are paramount. The passivated finish enhances surface durability against oxidants, while the coarse 4-40 UNC threads and Class 3A fit ensure rapid, reliable fastening with minimal cross-threading risks. Its partially threaded configuration and hex drive design provide superior grip and torque transmission, making it ideal for machinery, enclosures, and structural assemblies that require long-term reliability under stress and exposure.

Specification Summary & Compliance

This fastener adheres to UNC coarse thread standards with a Class 3A thread fit for high precision, and dimensions including a 1 1/2" length, 3/4" minimum thread length, and 0.112" thread diameter. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for regulated industrial applications.