S-92620A348 1 1/2"-6 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 capacity with 150,000 psi tensile strength for reliable performance in the most demanding applications
• Superior corrosion resistance from zinc yellow-chromate plating, extending service life in harsh industrial environments
• High-strength Grade 8 classification with Rockwell C33 hardness for maximum durability and resistance to shear and vibration
• Optimized coarse UNC threading for faster assembly and reduced cross-threading risk in structural applications
• Secure external hex drive design providing high torque capability and easy installation with standard tools
• Precision Class 2A thread fit ensuring consistent engagement and reliable fastening integrity
• Partial threading configuration offering both gripping strength and unthreaded shank stability

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers exceptional engineering value for heavy machinery, structural steel connections, and industrial equipment assembly. The 1 1/2"-6 UNC coarse thread configuration provides superior pull-out resistance in metal-to-metal applications, while the zinc yellow-chromate plating creates a robust barrier against corrosion in outdoor or chemically aggressive environments. The 8-inch length with partial threading allows for optimal clamp load distribution, making it ideal for thick-section assemblies where vibration resistance is critical. With 150,000 psi tensile strength and Rockwell C33 hardness, this fastener solves common failure points in high-stress applications, ensuring long-term structural integrity and reducing maintenance frequency in industrial settings.

Specification Summary & Compliance

This heavy-duty hex head screw features precision Class 2A thread fit with 1 1/2"-6 UNC coarse threading and 8-inch length. Manufactured to ASME B18.2.1 and SAE J429 Grade 8 specifications, ensuring dimensional accuracy and mechanical performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for safe industrial use worldwide.