S-91268A210 3/8"-16 x 1 1/2" 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, ideal for high-stress industrial applications
• Superior hardness and wear resistance thanks to Rockwell C33 hardness, extending service life in demanding environments
• Reliable thread engagement with Class 2A thread fit, ensuring precise assembly and vibration resistance
• Quick installation and removal using standard external hex drive tools, reducing maintenance downtime
• Full-thread design provides consistent clamping force along the entire 1-1/2" length for secure fastening
• Heavy-duty construction with Grade 8 steel material, capable of withstanding extreme mechanical stresses
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for guaranteed performance

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver exceptional engineering value in heavy-duty applications where failure is not an option. The 3/8"-16 UNC coarse thread configuration provides superior resistance to vibration loosening while enabling rapid assembly in construction, machinery, and industrial equipment. Manufactured from high-strength steel with Rockwell C33 hardness, these fasteners overcome common challenges of material fatigue and thread stripping in high-torque scenarios. The fully threaded design ensures maximum thread contact area, distributing stress evenly across the entire 1-1/2" length for enhanced joint integrity. Whether securing structural components or heavy machinery, these industrial fasteners maintain their 150,000 psi tensile strength under extreme operational conditions, providing engineers with reliable performance in critical applications.

Specification Summary & Compliance

This Grade 8 hex head screw features precision Class 2A thread fit with 3/8"-16 UNC coarse threads in right-hand direction, manufactured to exacting ASME B18.2.1 and SAE J429 standards. The fastener maintains dimensional accuracy across all critical parameters including 1/4" head height and 9/16" head width for consistent tool engagement. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility while delivering uncompromised mechanical performance in industrial settings.