S-90429A161 3/8"-24 x 5" 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 in high-stress industrial applications, reducing the risk of fastener failure.
• Precision Class 3A thread fit provides superior engagement and vibration resistance, minimizing loosening in dynamic environments.
• Durable alloy steel construction with Rockwell C39 hardness offers excellent wear resistance and long-term durability under heavy loads.
• 82° countersink angle with standard flat head profile allows for flush mounting, enhancing aesthetics and preventing snagging in assembled components.
• Partially threaded design enables secure clamping of materials without unnecessary thread engagement, improving installation efficiency.
• Hex drive (7/32") compatibility facilitates easy installation and removal with standard tools, reducing assembly time and labor costs.
• Compliance with ASTM F835, RoHS 3, and REACH ensures adherence to industry standards and environmental regulations, supporting sustainable procurement.

Professional Applications & Engineering Value

This 3/8"-24 UNF flat head screw is engineered to address critical challenges in industrial fastening, where high tensile strength and precise thread fit are paramount. The alloy steel material and Rockwell C39 hardness provide exceptional resistance to shear and fatigue, making it ideal for heavy-duty machinery, automotive assemblies, and structural frameworks. The fine thread spacing and Class 3A thread fit ensure tight, secure connections that withstand vibrations and dynamic loads, reducing maintenance needs. With an 82° countersink angle, it offers seamless integration into countersunk holes, preventing protrusion and enhancing safety. Compliant with ASTM F835, this screw delivers consistent performance in demanding environments, from manufacturing plants to construction sites, while meeting RoHS and REACH standards for environmentally conscious operations.

Specification Summary & Compliance

This screw adheres to inch system measurements with a 3/8"-24 UNF thread size and Class 3A thread fit for high precision. It meets ASTM F835 specifications for mechanical properties and is RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring it is free from hazardous substances. The partially threaded design and 5" length provide versatility for various clamping applications, while the right-hand thread direction and fine thread spacing support standardized assembly processes.