S-92865A658 3/8"-16 x 8 1/2" 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 heavy loads, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from zinc plating extends service life and maintains integrity in harsh or outdoor industrial environments.
• Coarse UNC threading provides faster installation and a stronger grip in a wider range of materials, minimizing stripping and cross-threading.
• Grade 5 steel construction with Rockwell C25 hardness offers an optimal balance of strength and ductility, resisting shear and deformation.
• External hex drive and hex head design allow for high-torque application with common tools, ensuring secure fastening and easy maintenance.
• Fully threaded shank maximizes thread engagement along the entire length, providing uniform clamping force and versatility in assembly depth.
• Class 2A thread fit guarantees consistent, free-spinning assembly with standard nuts, streamlining production and reducing installation time.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 3/8"-16 UNC hex head screw addresses critical challenges in construction, machinery assembly, and structural framing. The Grade 5 steel material, combined with a zinc plated finish, resists environmental corrosion and mechanical stress, preventing premature wear in high-vibration settings. Its coarse thread design ensures rapid installation and robust holding power in both metal and wood substrates, reducing labor time and enhancing joint reliability. The external hex drive facilitates easy access in confined spaces, making it ideal for maintenance and repair operations where durability and compliance with ASME B18.2.1/SAE J429 standards are non-negotiable for safety and performance.

Specification Summary & Compliance

This fastener adheres to precise dimensional tolerances, including a Class 2A thread fit for consistent assembly and UNC coarse threading per inch-system standards. It meets ASME B18.2.1 and SAE J429 specifications for hex head screws, ensuring interoperability and reliability. Compliant with RoHS 3 (2015/863/EU) regulations, it is free of hazardous substances, supporting sustainable and safe industrial practices. The 8 1/2" length and fully threaded design provide versatility for various clamping requirements.