S-90002A116 3/8"-16 x 1 1/2" ASME B18.2.1, SAE J429 High-Strength Steel Hex Head Screws with Material Certification

Key Features & Benefits at a Glance

• Exceptional strength and durability with Grade 8 classification and 150,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments
• Optimal thread engagement with UNC coarse thread design and Class 2A fit ensuring secure fastening and vibration resistance
• Enhanced installation efficiency through external hex drive design allowing for high torque application and easy installation
• Maximum clamping force distribution with fully threaded construction along the entire 1-1/2" length
• Consistent hardness performance maintained at Rockwell C33 for reliable mechanical properties under stress
• Industry-standard compliance meeting ASME B18.2.1 and SAE J429 specifications for quality assurance

Professional Applications & Engineering Value

These Grade 8 hex head screws deliver critical performance advantages in heavy machinery, structural assemblies, and industrial equipment where failure is not an option. The steel construction with zinc yellow-chromate plating provides exceptional protection against corrosion in challenging environments, while the 3/8"-16 UNC coarse thread design ensures rapid installation and superior resistance to vibration loosening. The external hex drive accommodates high torque requirements, making them ideal for applications requiring substantial clamping force. With fully threaded construction and Class 2A thread fit, these fasteners maintain consistent pressure distribution across the entire engagement length, preventing joint failure in critical industrial applications where reliability is paramount.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance. The 3/8"-16 UNC coarse thread follows standardized threading specifications, while the zinc yellow-chromate plating provides superior surface protection. These hex head screws fully comply with ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties meet industrial requirements. The manufacturing process adheres to strict quality controls to maintain the specified Rockwell C33 hardness and 150,000 PSI tensile strength throughout production batches.