S-92620A319 1 1/8"-7 x 8" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capability with 150,000 psi tensile strength for demanding structural and machinery applications.
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
• High-strength Grade 8 classification and Rockwell C33 hardness ensure reliable performance under high stress and vibration.
• Easy installation and removal with a standard 1 11/16" external hex head design for common wrench access.
• Secure coarse UNC threading with Class 2A fit offers excellent engagement and resistance to loosening in heavy-duty assemblies.
• Optimized for partial-thread applications where unthreaded shank provides enhanced shear strength and precise clamping.
• Compliance with major industry standards including ASME B18.2.1 and SAE J429, ensuring interchangeability and quality assurance.

Professional Applications & Engineering Value

This Grade 8 hex head screw is engineered to address critical challenges in heavy machinery, construction, and industrial equipment assembly. The 1-1/8"-7 UNC coarse thread design ensures rapid installation and robust holding power in thick materials, reducing assembly time while preventing thread stripping. The partially threaded configuration concentrates tensile strength along the engaged section, minimizing stress concentration and providing a reliable clamp in dynamic load conditions. With zinc yellow-chromate plating, the fastener delivers long-term corrosion protection, making it suitable for outdoor or chemically exposed environments. Its compliance with ASME B18.2.1 and SAE J429 standards guarantees consistent dimensions and mechanical properties, enabling seamless integration into existing designs and maintenance protocols.

Specification Summary & Compliance

This screw adheres to Class 2A thread fit tolerances per UNC standards, ensuring precise and consistent threading. It meets ASME B18.2.1 and SAE J429 specifications for dimensional and mechanical requirements. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming the absence of restricted hazardous substances and supporting environmentally responsible procurement.