S-91223A216 1/4"-20 x 3/8" 316 Stainless Steel Ultra-Low-Profile Socket Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• High-strength performance with a tensile strength of 70,000 psi and Rockwell B70 hardness, ensuring reliable load-bearing capacity and durability.
• Precise Class 2A thread fit for easy assembly and consistent engagement, reducing the risk of cross-threading and improving installation efficiency.
• Ultra-low socket head profile allows for use in tight spaces and provides a sleek, low-clearance design without compromising on drive torque.
• Robust 1/8" hex drive offers secure tool engagement and minimizes the risk of stripping, enabling high-torque applications.
• Fully threaded design ensures maximum grip and uniform clamping force along the entire length for versatile fastening needs.
• Compliance with RoHS 3 and REACH regulations guarantees environmental safety and meets global standards for restricted substances.

Professional Applications & Engineering Value

This 316 stainless steel socket head cap screw is engineered to address critical challenges in demanding industrial settings, such as corrosion from chemicals, moisture, and high-stress conditions. The ultra-low socket head profile and 1/4"-20 UNC coarse thread with Class 2A fit provide exceptional precision and ease of installation in confined spaces, reducing assembly time and enhancing reliability. Its fully threaded design ensures uniform load distribution, making it ideal for machinery, automotive assemblies, and structural applications where vibration resistance and long-term performance are paramount. By combining high tensile strength and corrosion resistance, this fastener minimizes maintenance needs and extends service life in harsh environments.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including a Class 2A thread fit per UNC standards, ensuring consistent thread engagement and interchangeability. Manufacturing complies with industry norms for socket head cap screws, with head diameter tolerance of -0.005" to 0.005" for accuracy. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in regulated markets and commitment to environmental standards.