S-91870A242 10-24 x 1/2" ASME B18.3 Tamper-Resistant Torx Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with Torx T25 drive for secure installations in high-security environments
• Superior corrosion protection from 18-8 stainless steel construction and passivated finish, ideal for harsh industrial conditions
• Reliable thread engagement with Class 3A UNC coarse threads ensuring precise, vibration-resistant fastening
• Optimized flush mounting thanks to standard 82° countersink angle and flat head design for smooth surface finishes
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Full regulatory compliance meeting ASME B18.3 standards, RoHS 3, and REACH for global quality assurance
• Complete threading coverage along the 1/2" length for maximum grip and load distribution in assemblies

Professional Applications & Engineering Value

These 10-24 UNC flat head screws are engineered to address critical challenges in industrial fastening, where security, corrosion resistance, and structural integrity are paramount. The 18-8 stainless steel material, combined with a passivated finish, provides excellent durability against moisture, chemicals, and environmental stressors, making them ideal for outdoor equipment, marine hardware, and food processing machinery. The tamper-resistant Torx T25 drive prevents unauthorized access in public infrastructure, electronic enclosures, and transportation systems, while the Class 3A thread fit and coarse UNC threading ensure quick installation and reduced loosening under dynamic loads. By integrating a standard 82° countersink angle, these screws facilitate seamless flush mounting in metal, plastic, and composite materials, enhancing both safety and aesthetics in professional assemblies.

Specification Summary & Compliance

This product adheres to Class 3A thread fit for precise UNC coarse threading, with dimensions including 10-24 thread size, 1/2" length, and 0.19" thread diameter. Manufacturing and quality are governed by ASME B18.3 specifications, ensuring consistent performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms environmental safety and material restrictions are met for industrial use.