S-91253A365 3/8"-24 x 2" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 130,000 PSI ensures reliable performance under high-stress conditions, reducing the risk of fastener failure.
• Class 3A fine threading provides superior thread engagement and vibration resistance, maintaining secure connections in dynamic environments.
• Black-oxide coating on alloy steel offers enhanced corrosion resistance and durability, extending service life in harsh industrial settings.
• Hex drive design with 7/32" drive size allows for easy installation and high torque application, minimizing stripping and improving efficiency.
• 82° countersink angle and flat head profile enable flush mounting for a clean, aerodynamic finish and reduced snagging risks.
• Full threading along the 2" length ensures maximum grip and adjustability, suitable for a wide range of material thicknesses.
• Compliance with ASTM F835, RoHS 3, and REACH guarantees adherence to industry standards for safety, quality, and environmental regulations.

Professional Applications & Engineering Value

This 3/8"-24 UNF flat head screw is engineered to address critical challenges in industrial assembly, such as vibration loosening and material fatigue. Constructed from black-oxide alloy steel with a Rockwell C39 hardness, it resists wear and corrosion in demanding environments like machinery, automotive, and construction. The Class 3A fine thread and fully threaded design enhance clamping force and stability, preventing joint failure under dynamic loads. Its hex drive and 82° countersink facilitate quick, secure installations, reducing labor time and improving structural integrity. Ideal for heavy-duty fastening applications, this screw ensures long-term reliability and compliance with stringent industry standards.

Specification Summary & Compliance

The screw features precise Class 3A thread fit with UNF fine threading (3/8"-24), ensuring tight tolerances per inch-based standards. It meets ASTM F835 specifications for mechanical properties, including tensile strength and hardness. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and adherence to environmental safety guidelines for industrial use.