S-90920A250 10-24 x 1 1/4" ASME B18.6.3 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ideal for harsh industrial environments
• Enhanced torque transfer and reduced cam-out with T20 Torx drive for secure, efficient installations
• High tensile strength of 60,000 psi and Rockwell B70 hardness for reliable load-bearing performance
• Precise Class 3A thread fit ensures consistent engagement and vibration resistance in assemblies
• Fully threaded 1-1/4" length provides maximum grip and holding power across the entire fastener
• Standard 82° countersink angle allows for flush mounting in materials for a clean, professional finish
• Compliance with ASME B18.6.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards

Professional Applications & Engineering Value

These 10-24 UNC flat head Torx screws are engineered for demanding applications where precision and durability are critical. The zinc-plated steel material offers excellent corrosion resistance, making them suitable for outdoor equipment, automotive assemblies, and machinery exposed to moisture. The T20 Torx drive minimizes tool slippage, reducing damage to fastener heads and improving installation efficiency in high-torque scenarios. With a coarse thread spacing and Class 3A thread fit, these screws provide quick assembly and reliable performance in wood, metal, and plastic components, ensuring long-term structural integrity and reduced maintenance needs.

Specification Summary & Compliance

This product features a 10-24 UNC thread size with Class 3A thread fit for precise dimensional accuracy. It adheres to ASME B18.6.3 manufacturing standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability. The 82° countersink angle and fully threaded design meet industry specifications for consistent performance in professional fastener applications.