S-92620A316 1 1/8"-7 x 5" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Maximum load-bearing capacity with 150,000 psi tensile strength and Grade 8 classification, ensuring reliable performance in high-stress industrial applications
• Superior corrosion protection through zinc yellow-chromate plating, extending service life in harsh environments and reducing maintenance frequency
• Optimized thread engagement with Class 2A thread fit and UNC coarse threading, providing faster assembly and reduced cross-threading risks
• Enhanced torque transmission via the external hex head design, allowing for secure tightening with standard tools and minimizing stripping
• Precision partial threading (2½" minimum thread length) on a 5" shank, offering flexibility for applications requiring both threaded and unthreaded sections
• Consistent hardness performance at Rockwell C33, maintaining structural integrity under repeated loads and vibration
• Regulatory compliance assurance meeting ASME B18.2.1, SAE J429, RoHS 3, and REACH standards for global industrial use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these Grade 8 hex head screws deliver exceptional reliability in heavy machinery, structural steel connections, and high-vibration environments. The 1 1/8"-7 UNC coarse thread configuration ensures rapid installation while maintaining secure fastening in thick materials. The zinc yellow-chromate plating provides critical corrosion resistance, significantly outperforming standard zinc coatings in humid or chemically aggressive settings. With partial threading and a substantial 5" length, these fasteners offer versatile solutions where both clamping force and shear strength are paramount. The combination of 150,000 psi tensile strength and Rockwell C33 hardness ensures these screws withstand extreme mechanical stresses without deformation or failure, making them ideal for critical infrastructure, construction equipment, and manufacturing systems where fastener integrity directly impacts operational safety and longevity.

Specification Summary & Compliance

This 1 1/8"-7 UNC hex head screw maintains Class 2A thread fit tolerances for consistent engagement and meets ASME B18.2.1 and SAE J429 manufacturing specifications. The fastener is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, ensuring adherence to international environmental and safety regulations. With dimensions of 5" length, 1 11/16" head width, and 23/32" head height, it provides standardized compatibility across industrial applications.