S-94063A251 10-24 x 1 1/2" ASME B18.6.3 Tamper-Resistant Drilled Spanner Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh or humid environments.
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B70 hardness for reliable, long-lasting fastening.
• Secure tamper-resistant installation using the drilled spanner drive, preventing unauthorized removal in sensitive applications.
• Precise flush mounting with a standard 82° countersink angle and flat head design for a smooth, unobtrusive surface finish.
• Consistent and reliable threading with fully threaded UNC coarse threads and Class 2A fit, ensuring easy assembly and vibration resistance.
• Broad industry compliance meeting ASME B18.6.3 specifications, RoHS 3, and REACH standards for safe, regulated use.
• Dimensional accuracy with controlled head diameter tolerance for predictable performance in precision assemblies.

Professional Applications & Engineering Value

This 10-24 UNC flat head screw is engineered to address critical challenges in industrial and mechanical assemblies where corrosion resistance, strength, and a low-profile finish are paramount. The 18-8 stainless steel material, combined with a passivated finish, provides excellent protection against oxidation and chemical exposure, making it suitable for outdoor equipment, marine hardware, and food processing machinery. The fully threaded coarse UNC thread and Class 2A fit ensure quick installation and robust holding power, reducing the risk of loosening under dynamic loads. The drilled spanner drive offers a tamper-resistant solution for security-conscious applications, while the flat head with an 82° countersink angle allows for seamless integration into panels and frames, eliminating protrusions and improving safety. These features make it an indispensable component for engineers seeking durability, compliance, and efficiency in demanding industrial fastening scenarios.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 2A thread fit for consistent assembly and a head diameter tolerance of -0.022" to 0". It conforms to ASME B18.6.3 specifications for mechanical fasteners and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for various industrial and consumer applications.