S-90019A460 1/2"-13 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Thread-Locking Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional vibration resistance with integrated nylon patch thread locker, maintaining secure fastening from -55° to 250°F in demanding environments
• Maximum load-bearing capacity thanks to Grade 8 classification with 150,000 psi tensile strength for critical heavy-duty applications
• Superior corrosion protection through zinc yellow-chromate plating that extends service life in harsh industrial conditions
• Reliable installation and removal with external hex drive design providing excellent torque transmission and tool engagement
• Optimized thread engagement through UNC coarse threading and Class 2A fit ensuring consistent performance and easy assembly
• Full-threaded design offers maximum grip length and flexibility in various material thicknesses
• Certified quality assurance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed performance standards

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications where vibration resistance and structural integrity are paramount, these Grade 8 hex head screws deliver exceptional performance in construction equipment, automotive assemblies, and machinery manufacturing. The nylon patch thread locker technology effectively prevents loosening under constant vibration and thermal cycling from -55° to 250°F, eliminating the need for additional locking components. Manufactured from zinc yellow-chromate plated steel, these fasteners provide superior corrosion protection while maintaining the Rockwell C33 hardness required for high-stress applications. The UNC coarse thread pattern with Class 2A fit ensures rapid installation and reliable performance in various materials, making them ideal for production environments where efficiency and reliability are critical.

Specification Summary & Compliance

These 1/2"-13 x 1-1/2" hex head screws feature precision Class 2A thread fit with UNC coarse threading and full threading along the entire shank length. Manufactured to exacting ASME B18.2.1 and SAE J429 specifications, they guarantee dimensional accuracy and performance consistency. The fastener meets Grade 8 strength requirements with verified 150,000 psi tensile strength and Rockwell C33 hardness, ensuring compliance with industrial standards for high-strength applications. The external hex drive configuration provides optimal torque transmission while maintaining the specified dimensional tolerances throughout the manufacturing process.