S-92620A912 7/8"-9 x 3" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength for demanding applications with Grade 8 classification and 150,000 psi tensile strength, ensuring reliable performance under high stress.
• Superior corrosion resistance provided by the zinc yellow-chromate plating, extending the fastener's service life in harsh industrial environments.
• High durability and wear resistance due to Rockwell C33 hardness, maintaining structural integrity through repeated use.
• Easy installation and removal with the external hex drive and coarse UNC threads, reducing assembly time and labor costs.
• Precise fit and reliable engagement achieved with Class 2A thread fit, minimizing the risk of loosening in vibrating machinery.
• Full threading for maximum grip along the entire 3-inch length, providing uniform clamping force in thick materials.
• Compliance with industry standards including ASME B18.2.1 and SAE J429, ensuring consistent quality and interchangeability.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw addresses critical challenges in construction, machinery, and automotive sectors where high tensile strength and corrosion resistance are paramount. The steel material and zinc yellow-chromate plating combat rust and degradation, making it ideal for outdoor or high-moisture environments. Its coarse UNC thread and external hex drive facilitate quick installation in tough materials, reducing downtime. By meeting ASME B18.2.1 and SAE J429 specifications, it ensures reliability in load-bearing assemblies, preventing failures and enhancing safety in demanding setups like structural frames and heavy equipment.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including a Class 2A thread fit for consistent engagement and UNC coarse threading (7/8"-9) for robust performance. Manufactured in compliance with ASME B18.2.1 and SAE J429 specifications, it guarantees quality and interoperability. The zinc yellow-chromate finish supports environmental regulations like RoHS and REACH by minimizing hazardous substances, while the Grade 8 strength rating (150,000 psi tensile strength and Rockwell C33 hardness) confirms its suitability for critical, high-stress applications.