S-90201A113 1/4"-20 x 1" Extreme-Strength Grade 9 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 180,000 psi tensile strength for reliable performance in high-stress applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh environments
• Optimized thread engagement through UNC coarse threading and Class 2A fit ensures secure fastening and vibration resistance
• Enhanced installation efficiency with external hex drive design allowing for high torque application and quick assembly
• Maximum thread coverage through fully threaded design provides consistent clamping force along the entire fastener length
• Premium material performance with Grade 9 steel and Rockwell C38 hardness delivering exceptional durability and wear resistance
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in industrial applications

Professional Applications & Engineering Value

These Grade 9 hex head screws deliver critical engineering solutions for demanding industrial applications where failure is not an option. The combination of 180,000 psi tensile strength and Rockwell C38 hardness provides exceptional resistance to shear forces and material fatigue, making them ideal for heavy machinery, structural assemblies, and high-vibration environments. The zinc yellow-chromate plating offers superior corrosion protection, significantly extending service life in outdoor or chemically aggressive settings. The UNC coarse thread design ensures rapid installation and reliable performance in various materials, while the fully threaded configuration maximizes load distribution. These industrial screws are engineered to maintain integrity under extreme conditions, reducing maintenance frequency and preventing costly downtime in manufacturing, construction, and automotive applications.

Specification Summary & Compliance

This high-strength hex head screw features precise Class 2A thread fit tolerances and UNC thread standard compliance, ensuring consistent performance and interchangeability. The fastener meets Grade 9 strength classification with verified mechanical properties including 180,000 psi tensile strength and Rockwell C38 hardness. Manufacturing and material compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and restricted substance adherence for industrial applications.