S-95362A328 3/8"-16 x 1 3/4" ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-65 Mil. Spec. High-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional strength for critical applications with Grade 8 classification and 150,000 PSI tensile strength, ensuring reliable performance under extreme loads.
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
• Optimized for high-torque installation thanks to the external hex head design, allowing for secure fastening with standard tools.
• Enhanced durability and wear resistance from Rockwell C33 hardness, maintaining thread integrity through repeated use.
• Reliable coarse UNC threading with Class 2A fit for easier alignment and reduced cross-threading risk in demanding assemblies.
• Versatile partially threaded shank design that provides strong clamping force where needed while allowing flexibility in joint design.
• Compliance with major industry standards including ASME B18.2.1, SAE J429, and ASTM A354BD, ensuring consistent quality and interchangeability.

Professional Applications & Engineering Value

This Grade 8 hex head screw delivers critical engineering value in heavy-duty applications where failure is not an option. The steel construction with Rockwell C33 hardness provides exceptional resistance to vibration loosening and fatigue, while the zinc yellow-chromate plating offers superior protection against corrosion in outdoor or chemically aggressive environments. The partially threaded design with UNC coarse threads ensures optimal stress distribution and prevents joint relaxation in structural assemblies, machinery frames, and high-vibration equipment. These industrial screws solve common fastening challenges in construction, automotive, and manufacturing sectors by providing predictable clamp load maintenance and eliminating the need for frequent retightening in critical connections.

Specification Summary & Compliance

This fastener maintains Class 2A thread fit tolerance for reliable assembly and features 3/8"-16 UNC coarse threading with minimum 1" thread length. Manufactured to ASME B18.2.1, SAE J429, and ASTM A354BD specifications, ensuring dimensional consistency and mechanical properties. Compliant with REACH (EC 1907/2006) regulations regarding substance restrictions, making it suitable for various industrial markets with environmental compliance requirements.