S-91263A773 3/8"-24 x 1 1/2" 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.
• Superior corrosion resistance from zinc-plated alloy steel extends service life in harsh industrial environments.
• Precise Class 3A thread fit provides tighter tolerances for secure, vibration-resistant connections in critical assemblies.
• Fully threaded design offers consistent engagement along the entire length, enhancing load distribution and holding power.
• Standard 82° countersink angle allows for a flush, low-profile installation, minimizing protrusion and improving safety.
• Hex drive (7/32") compatibility enables easy installation and removal with common tools, speeding up assembly processes.
• Compliance with ASTM F835, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations for global supply chain compatibility.

Professional Applications & Engineering Value

These 3/8"-24 UNF flat head screws are engineered to address common industrial challenges such as vibration loosening and corrosion-induced degradation. Constructed from zinc-plated alloy steel, they provide excellent durability and resistance to environmental factors, making them ideal for machinery, automotive, and structural applications where reliability is critical. The fine thread spacing and Class 3A fit deliver superior clamping force and stability, reducing maintenance needs in dynamic load conditions. The flat head with standard profile ensures seamless integration into countersunk holes, promoting aerodynamic and aesthetic finishes in assembled products.

Specification Summary & Compliance

This product features a right-hand thread with UNF fine thread type and Class 3A thread fit for high precision. Dimensions include a thread size of 3/8"-24, length of 1 1/2", head diameter of 0.781", and drive size of 7/32". It meets ASTM F835 specifications for mechanical properties and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safety and environmental responsibility.