S-91309A622 3/8"-16 x 3/4" ASME B18.2.1, ASTM A307 Low-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with zinc plating, extending service life in demanding environments
• High tensile strength of 60,000 PSI ensures reliable performance in heavy-duty applications
• Rockwell B69 hardness provides superior durability and resistance to wear
• Class 2A thread fit guarantees consistent, easy assembly and secure fastening
• Coarse UNC threading enables quick installation and reduced cross-threading risks
• Full threading along the 3/4" length offers maximum grip and adjustability
• External hex drive design allows for high-torque application with standard tools

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this 3/8"-16 UNC hex head screw addresses critical needs for reliability and longevity. The zinc-plated steel construction combats corrosion in harsh environments, while the coarse thread and Class 2A fit ensure rapid, secure assembly—minimizing downtime in production lines, machinery, and structural frameworks. Its 60,000 PSI tensile strength and Rockwell B69 hardness provide the necessary robustness for high-stress connections, making it ideal for construction, automotive, and manufacturing sectors where ASME B18.2.1 compliance is essential for safety and performance.

Specification Summary & Compliance

This screw features a 3/8"-16 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy. It meets ASME B18.2.1 specifications under ASTM A307, ensuring consistent manufacturing quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, supporting sustainable and safe industrial practices.