S-90201A316 3/8"-16 x 1 1/4" Extreme-Strength Grade 9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 180,000 PSI ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh industrial environments.
• High hardness rating (Rockwell C38) provides excellent wear resistance and durability under heavy loads.
• Coarse UNC threading with Class 2A fit allows for quick installation and secure fastening in various materials.
• Fully threaded design offers maximum grip length and uniform stress distribution for enhanced joint integrity.
• External hex drive enables easy tightening with standard tools, improving assembly efficiency.
• Compliance with RoHS 3 and REACH ensures environmental safety and meets global regulatory standards.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these Grade 9 hex head screws deliver robust performance where reliability is critical. The steel construction combined with zinc yellow-chromate plating effectively combats corrosion, making them ideal for outdoor machinery, construction equipment, and automotive assemblies. The 3/8"-16 UNC coarse thread and Class 2A thread fit provide superior holding power in coarse-grained materials, reducing the likelihood of stripping. With a fully threaded shank and external hex drive, they ensure consistent clamping force and simplify maintenance in heavy-duty applications, from structural frameworks to industrial manufacturing lines.

Specification Summary & Compliance

This fastener adheres to inch system dimensions with precise Class 2A thread fit and UNC coarse thread standards. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance requirements, ensuring environmental and safety regulations are satisfied for industrial use.