S-90201A426 1/2"-13 x 2" 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 industrial applications, reducing the risk of fastener failure.
• Superior corrosion resistance from zinc yellow-chromate plating extends service life in harsh environments, minimizing maintenance and replacement costs.
• High hardness rating (Rockwell C38) provides excellent wear resistance and durability under repetitive loads and vibrations.
• Coarse UNC threading with Class 2A fit allows for quick, secure installation and easy disassembly, saving time in assembly and maintenance operations.
• Partially threaded design offers optimal grip and clamping force for materials that require precise joint security without full-length threading.
• External hex drive and standard hex head enable straightforward installation with common tools, enhancing efficiency in fast-paced work environments.
• Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets global standards for industrial and construction use.

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these Grade 9 hex head screws combine high-strength steel and a zinc yellow-chromate finish to address common challenges like corrosion, vibration loosening, and structural fatigue. The 1/2"-13 UNC coarse thread and Class 2A thread fit provide reliable engagement in materials such as steel frameworks and heavy machinery, reducing the need for frequent retightening. Ideal for construction, manufacturing, and equipment assembly, these partially threaded screws deliver consistent clamping force, enhancing the longevity and safety of critical connections while complying with industry regulations for sustainable operations.

Specification Summary & Compliance

This fastener adheres to Class 2A thread fit tolerances and UNC coarse thread standards, ensuring precise dimensional accuracy. Manufactured from steel with a zinc yellow-chromate plating finish, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, supporting environmentally responsible procurement. The specifications include a 2" length, 1/2"-13 thread size, and Grade 9 strength classification, validated for high-performance industrial applications.