S-93190A284 3/8"-16 x 4 1/4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 Stainless Steel construction, reducing maintenance and replacement costs.
• High tensile strength of 70,000 psi ensures reliable performance under heavy loads, preventing fastener failure in critical applications.
• Rockwell B70 hardness provides excellent durability and resistance to wear, extending the service life of your assemblies.
• External hex drive and hex head design allows for easy installation and high torque application with standard tools, improving assembly efficiency.
• Class 2A thread fit and UNC coarse threads enable quick assembly and reliable engagement, reducing the risk of cross-threading.
• Partial threading offers unthreaded shank for precise clamping and shear resistance, ideal for structural connections.
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures consistent quality, safety, and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, this 3/8"-16 UNC Hex Head Screw in 316 Stainless Steel addresses common challenges like corrosion, vibration loosening, and high-stress fatigue. The coarse thread design and Class 2A thread fit facilitate rapid installation in materials such as metal frameworks, machinery, and construction assemblies, minimizing downtime. Its partial threading provides a strong, unthreaded grip length that enhances shear strength, making it ideal for heavy-duty applications including structural supports, marine equipment, and chemical processing plants where exposure to moisture and chemicals is frequent. The external hex drive ensures secure tool engagement, allowing for precise torque control in confined spaces, thereby improving overall assembly integrity and reliability.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy, a length of 4-1/4", and partial threading with a minimum thread length of 1". It is manufactured in accordance with ASME B18.2.1 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets rigorous industry and environmental standards for safe and sustainable use.