S-90920A253 10-24 x 1 1/2" ASME B18.6.3 Alloy Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term reliability in harsh industrial environments
• Enhanced torque transmission through T20 Torx drive, reducing cam-out and tool slippage for secure installations
• Precise Class 3A thread fit providing excellent engagement and vibration resistance in demanding applications
• Full threading design delivering maximum grip strength along the entire 1-1/2" length for superior holding power
• High tensile strength rating of 60,000 PSI with Rockwell B70 hardness, ensuring durability under heavy loads
• Standard 82° countersink angle allowing for flush mounting and clean, professional finishes
• Compliance with multiple industry standards including ASME B18.6.3, RoHS 3, and REACH for quality assurance

Professional Applications & Engineering Value

These 10-24 UNC zinc-plated steel flat head screws with T20 Torx drive are engineered to address critical fastening challenges in industrial settings. The coarse thread spacing and Class 3A thread fit provide exceptional vibration resistance, making them ideal for machinery, equipment assembly, and structural applications where loosening under dynamic loads is a concern. The zinc-plated steel construction offers reliable corrosion protection, extending service life in environments exposed to moisture and chemicals. The flat head design with standard profile ensures seamless integration into countersunk holes, maintaining surface integrity while the fully threaded configuration maximizes pull-out strength. These industrial-grade fasteners deliver consistent performance in automotive, manufacturing, and construction applications where 60,000 PSI tensile strength and precise thread engagement are paramount for safety and reliability.

Specification Summary & Compliance

These screws feature precision 10-24 UNC coarse threads with Class 3A thread fit for optimal engagement and dimensional accuracy. Manufacturing complies with ASME B18.6.3 specifications, ensuring consistent quality and performance. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming they meet current industry standards for restricted substances and chemical safety.