S-92620A957 1"-8 x 3" 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 for critical structural applications
• Superior corrosion resistance through zinc yellow-chromate plating in harsh industrial environments
• Exceptional hardness and durability with Rockwell C33 rating for extended service life
• Reliable coarse threading (UNC) ensures quick installation and superior vibration resistance
• Precision Class 2A thread fit guarantees consistent performance and easy assembly
• Full threading along 3" length provides maximum grip and load distribution
• External hex drive design enables high-torque installation with standard tools

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver exceptional engineering value in demanding industrial applications where failure is not an option. The steel construction combined with zinc yellow-chromate plating creates a robust barrier against corrosion, making them ideal for outdoor machinery, structural steel connections, and heavy equipment assembly. The 1"-8 UNC coarse thread configuration provides superior resistance to vibration loosening while enabling rapid installation in thick materials. With fully threaded design along the entire 3" length, these fasteners ensure maximum engagement and load distribution across the entire joint, preventing stress concentration points that can lead to premature failure in heavy-duty applications.

Specification Summary & Compliance

Manufactured to exacting Class 2A thread fit tolerances with 1"-8 UNC coarse threading specifications. These Grade 8 hex head screws comply with ASME B18.2.1 and SAE J429 standards for dimensional accuracy and mechanical properties. The products are fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, ensuring environmental responsibility and workplace safety in global industrial applications.