S-91870A719 8-32 x 1/4" ASME B18.3 Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws

Key Features & Benefits at a Glance

• Tamper-resistant security with Torx Plus IPR15 drive prevents unauthorized removal in high-risk environments
• Superior corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
• Optimized thread engagement through Class 2A UNC coarse threads ensuring reliable fastening performance
• Secure flush mounting with undercut flat head design that sits perfectly countersunk at 82° angle
• Full-thread coverage along the 1/4" length provides maximum holding power and vibration resistance
• Regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 8-32 UNC flat head screws with tamper-resistant Torx Plus drive address critical security and reliability challenges in industrial settings. The combination of 18-8 stainless steel and passivated finish creates exceptional resistance to corrosion and chemical exposure, making them ideal for harsh environments including outdoor equipment, marine applications, and chemical processing facilities. The undercut flat head profile ensures secure, flush mounting that prevents tampering while maintaining aesthetic requirements. With their 70,000 psi tensile strength and fully threaded coarse spacing, these security screws provide reliable fastening in electronic enclosures, public infrastructure, transportation systems, and access panels where vibration resistance and unauthorized access prevention are paramount concerns.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2A thread fit and UNC coarse thread spacing ensuring consistent performance across applications. These flat head screws comply with ASME B18.3 specifications for dimensional accuracy and mechanical properties. The products are fully compliant with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, meeting the latest environmental standards for industrial fasteners. The 82° countersink angle and undercut head design provide optimal seating in standard countersunk holes while the IPR15 drive size ensures proper torque transmission during installation.