S-91870A746 12-24 x 3/4" ASME B18.3 Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized Torx Plus IPR25 drive prevents unauthorized removal in high-security environments
• Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment for extended service life
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
• Precision thread engagement with Class 3A fit and UNC coarse threading ensures reliable fastening performance
• Optimized flush mounting featuring standard flat head profile with 82° countersink angle for seamless surface integration
• Full regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
• Complete threading coverage across the 3/4" length provides maximum grip and load distribution

Professional Applications & Engineering Value

Engineered for high-security industrial applications, these 12-24 UNC flat head screws address critical concerns in public infrastructure, machinery guarding, and access control systems. The tamper-resistant Torx Plus drive (IPR25 size) specifically counters vandalism and unauthorized disassembly while maintaining installation efficiency for authorized personnel. The 18-8 stainless steel material with passivated finish delivers exceptional resistance to corrosion, chemicals, and environmental exposure, making these industrial fasteners ideal for harsh operating conditions. The Class 3A thread fit with coarse thread spacing ensures rapid installation and vibration resistance, while the standardized 82° countersink angle provides flush mounting in precision-machined components. These heavy-duty screws maintain structural integrity under significant loads with their 70000 psi tensile strength, offering reliable performance in critical assembly applications.

Specification Summary & Compliance

This 12-24 UNC flat head screw features precision Class 3A thread fit with coarse thread spacing and full threading along its 3/4" length. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance standards. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. Mechanical properties include Rockwell B70 hardness and standardized 82° countersink angle for proper seating in mating components.