S-92620A624 3/8"-16 x 1" ASME B18.2.1, SAE J429 High-Strength Grade 8 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 PSI ensures reliable performance in the most demanding heavy-duty applications, reducing the risk of fastener failure.
• Superior corrosion resistance provided by zinc yellow-chromate plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• High hardness rating (Rockwell C33) offers excellent wear resistance and durability, maintaining thread integrity through repeated use.
• Coarse UNC thread pattern enables faster installation and better performance in materials where fine threads might strip or cross-thread.
• Full threading along the entire 1" length provides maximum grip and holding power across the entire fastened joint.
• Precision Class 2A thread fit ensures consistent, reliable engagement with mating components while allowing for easier assembly.
• External hex drive design allows for high torque application with standard tools, facilitating quick installation and removal.

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical engineering value in heavy machinery, construction equipment, and industrial assembly applications where high tensile strength and reliability are paramount. The steel construction combined with zinc yellow-chromate plating addresses common industrial challenges including vibration-induced loosening, environmental corrosion, and mechanical stress. The coarse UNC thread design provides superior performance in softer materials and applications requiring rapid assembly, while the external hex drive accommodates high-torque installation tools common in manufacturing and maintenance environments. These fully threaded fasteners ensure maximum load distribution across the entire engagement length, making them ideal for structural connections subject to dynamic loads and extreme conditions.

Specification Summary & Compliance

This 3/8"-16 UNC hex head screw features precision Class 2A thread fit tolerances and is manufactured to meet ASME B18.2.1 and SAE J429 Grade 8 specifications. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With a standardized inch system measurement and coarse thread spacing, these screws maintain consistent dimensional accuracy for reliable performance in professional applications.