S-91263A536 10-24 x 7/8" 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 with zinc plating protects against rust and extends service life in demanding industrial environments
• Precision Class 3A thread fit provides tighter tolerances for secure mating with nuts and threaded holes, minimizing vibration loosening
• Full threading along the 7/8" length maximizes grip and load distribution across the entire fastener for enhanced holding power
• Hex drive design with 1/8" drive size allows for high-torque installation using standard tools, improving assembly efficiency
• 82° countersink angle with standard flat head profile enables flush mounting for clean, aerodynamic surfaces in finished applications
• Rockwell C39 hardness rating maintains thread integrity and resistance to wear during repeated installation and removal cycles

Professional Applications & Engineering Value

These 10-24 UNC flat head screws deliver critical engineering value through their zinc-plated alloy steel construction and coarse thread spacing, specifically designed to address common industrial fastening challenges. The combination of high tensile strength and Class 3A thread fit provides exceptional resistance to vibrational loosening in machinery, automotive assemblies, and electrical enclosures where reliability is paramount. The fully threaded design ensures maximum engagement in both thin and thick materials, while the 82° countersink angle creates seamless flush finishes in precision applications. These hex drive screws are engineered to withstand harsh operating conditions while maintaining consistent performance, making them ideal for OEM manufacturing, maintenance operations, and structural applications requiring dependable right-hand thread fasteners.

Specification Summary & Compliance

This fastener maintains precision Class 3A thread fit according to UNC thread standards with a thread size of 10-24 and coarse thread spacing. Manufacturing specifications comply with ASTM F835 standards for mechanical properties and dimensional requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for global industrial applications.