S-90484A247 10-24 x 1" ASME B18.3, ASTM F835 Tamper-Resistant Hex-Drive Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior tamper resistance with specialized hex drive design to prevent unauthorized access in sensitive applications
• Exceptional corrosion protection through black-oxide coating that extends service life in demanding environments
• Maximum thread engagement with Class 3A fit ensuring precise, vibration-resistant connections in critical assemblies
• High-strength performance delivering 130,000 psi tensile strength for heavy-duty mechanical applications
• Enhanced durability with Rockwell C39 hardness providing excellent wear resistance and longevity
• Optimized installation through UNC coarse threading that enables faster assembly and reduced cross-threading risks
• Regulatory compliance meeting industry standards for safety and environmental requirements

Professional Applications & Engineering Value

These black-oxide alloy steel rounded head screws with 10-24 UNC coarse threading address critical engineering challenges in industrial settings. The tamper-resistant hex drive provides security in public infrastructure, electrical enclosures, and machinery where unauthorized access poses safety risks. The Class 3A thread fit ensures precise tolerance control, eliminating vibration-induced loosening in automotive, aerospace, and heavy equipment applications. The black-oxide surface treatment creates a protective barrier against moisture and chemicals, significantly extending service life in corrosive environments while maintaining dimensional stability. With full threading along the entire 1" length, these fasteners distribute clamping forces evenly, preventing stress concentration points that lead to material fatigue and joint failure.

Specification Summary & Compliance

Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision for superior dimensional accuracy. These 10-24 UNC coarse thread screws maintain strict compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The right-hand thread direction and fully threaded design provide consistent performance meeting industrial fastener specifications for high-strength applications requiring reliable, long-term fastening solutions.