S-91253A246 10-24 x 7/8" ASTM F835 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with 130,000 psi tensile strength and Rockwell C39 hardness for reliable performance in demanding environments
• Superior corrosion resistance thanks to black-oxide coating on alloy steel, extending service life in industrial applications
• Precise Class 3A thread fit ensures tight, secure fastening with minimal vibration loosening in critical assemblies
• Optimized 82° countersink angle provides flush mounting for clean, professional finishes in visible applications
• Hex drive design with 1/8" drive size enables easy installation and high torque application without cam-out
• Coarse UNC threading allows for quick assembly and better performance in materials prone to stripping
• Full threading along 7/8" length maximizes grip range and provides consistent holding power throughout engagement

Professional Applications & Engineering Value

These 10-24 UNC flat head screws deliver exceptional engineering value in industrial applications where high tensile strength and corrosion resistance are critical. The black-oxide alloy steel construction provides superior protection against environmental factors while maintaining the 130,000 psi tensile strength needed for structural applications. The Class 3A thread fit ensures precise engagement in machinery, automotive components, and electrical enclosures where vibration resistance is paramount. The 82° countersink angle and flat head design create seamless surfaces in precision equipment, while the hex drive configuration allows for high-torque installation in confined spaces. These fully threaded fasteners are particularly valuable in applications requiring consistent clamping force across the entire engagement length.

Specification Summary & Compliance

This 10-24 UNC flat head screw features precise Class 3A thread fit with coarse spacing and right-hand threading. The fastener meets ASTM F835 specifications for mechanical properties and dimensional accuracy. Compliance includes RoHS 3 (2015/863/EU) for hazardous substance restrictions and REACH (EC 1907/2006) for chemical safety, ensuring environmental responsibility and regulatory acceptance in global markets. The combination of Rockwell C39 hardness and 130,000 psi tensile strength guarantees reliable performance in demanding industrial applications.