S-90002A134 3/4"-10 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 150,000 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
• Optimal hardness and durability with Rockwell C33 rating, ensuring excellent wear resistance and thread integrity
• Easy installation and removal through external hex drive design, compatible with standard tools for efficient maintenance
• Secure fastening performance with Class 2A thread fit, preventing loosening under vibration and dynamic loads
• Full-length threading enables maximum grip strength and uniform stress distribution across the entire fastener length
• Industry-standard compliance with ASME B18.2.1 and SAE J429 specifications, ensuring interchangeability and reliability

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical engineering solutions for heavy machinery, structural assemblies, and industrial equipment where failure is not an option. The combination of 150,000 psi tensile strength and Rockwell C33 hardness provides exceptional resistance to shear forces and mechanical stress, while the zinc yellow-chromate plating offers superior protection against corrosion in demanding environments. The 3/4"-10 UNC coarse thread configuration ensures rapid installation and reliable performance in structural steel connections, manufacturing equipment, and transportation applications. Engineered to meet ASME B18.2.1 specifications, this fully threaded fastener maintains dimensional accuracy and mechanical properties required for critical industrial applications where safety and reliability are paramount.

Specification Summary & Compliance

This heavy-duty hex head screw features precise Class 2A thread fit tolerances with UNC coarse thread profile measuring 3/4"-10. Manufactured to exacting ASME B18.2.1 dimensional standards and SAE J429 Grade 8 mechanical requirements, ensuring consistent performance and interchangeability. The inch measurement system provides compatibility with North American industrial specifications, while the zinc yellow-chromate finish meets industry standards for corrosion protection. This fastener is ideal for applications requiring verified mechanical properties and dimensional accuracy in accordance with established engineering specifications.