S-92620A626 3/8"-16 x 1 1/4" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

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 through zinc yellow-chromate plating that protects against harsh industrial environments
• Optimized installation efficiency with external hex drive design providing secure tool engagement and torque transmission
• Consistent thread engagement through Class 2A fit UNC coarse threads that resist loosening under vibration
• Maximum thread coverage with full threading along the 1-1/4" length for enhanced grip and distribution of clamping forces
• Enhanced durability with Rockwell C33 hardness that maintains structural integrity under repeated loading
• Industry-standard compatibility meeting ASME B18.2.1 and SAE J429 specifications for reliable interchangeability

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical performance where failure is not an option. The 3/8"-16 UNC coarse thread configuration provides excellent engagement in various materials while resisting vibration-induced loosening common in industrial machinery. The zinc yellow-chromate plating creates a protective barrier against corrosion in demanding environments including outdoor equipment, automotive assemblies, and manufacturing facilities. With fully threaded design and external hex drive, installation becomes more efficient while ensuring maximum thread contact for superior clamping force distribution. These heavy-duty fasteners are engineered to maintain structural integrity in applications requiring 150,000 psi tensile strength, making them ideal for critical connections in construction equipment, transportation systems, and heavy machinery where reliability directly impacts operational safety and productivity.

Specification Summary & Compliance

This hex head screw features precise Class 2A thread fit with 3/8"-16 UNC coarse thread specifications ensuring consistent engagement and interchangeability. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 standards, the fastener delivers guaranteed mechanical properties including 150,000 psi tensile strength and Rockwell C33 hardness. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while meeting international quality and safety requirements.