S-92865A472 3/4"-16 x 1 1/4" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance with zinc plating protects against rust and environmental degradation, extending service life in harsh industrial settings.
• Precise Class 2A thread fit guarantees smooth assembly and secure fastening, minimizing installation time and improving joint integrity.
• High hardness rating (Rockwell C25) provides excellent wear resistance, maintaining thread form and drive integrity through repeated use.
• Fully threaded design allows for maximum grip length and adjustability, offering versatile fastening solutions across various material thicknesses.
• External hex drive with 1 1/8" head width enables high-torque installation with standard tools, ensuring tight clamping force and reducing slippage.
• Compliance with ASME B18.2.1 and SAE J429 standards ensures consistent quality and interchangeability, meeting rigorous industrial specifications.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to address critical fastening challenges in heavy-duty machinery, structural assemblies, and equipment manufacturing. The 3/4"-16 UNF fine threading provides superior resistance to vibration loosening compared to coarse threads, making it ideal for dynamic load environments. The zinc plated steel construction offers a durable barrier against moisture and chemicals, preventing premature corrosion in outdoor or chemically exposed settings. With its external hex drive and high tensile strength, it delivers reliable clamping force in construction, automotive, and industrial applications where joint integrity is paramount. The combination of Rockwell C25 hardness and fine thread pitch ensures long-term performance in high-stress connections, reducing maintenance needs and downtime.

Specification Summary & Compliance

This fastener features a Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and interchangeability. It meets ASME B18.2.1 and SAE J429 Grade 5 specifications for mechanical properties and manufacturing consistency. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of restricted hazardous substances and supporting environmental safety in industrial supply chains.