S-91900A915 8-32 x 1 3/4" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized Torx T15 drive requiring matching tools, preventing unauthorized removal in sensitive applications
• Superior corrosion protection through 18-8 stainless steel construction and passivated surface treatment for extended service life in harsh environments
• High-strength performance delivering 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing capability
• Precision thread engagement with Class 3A UNC coarse threads ensuring secure fastening and vibration resistance
• Streamlined installation featuring rounded button head design that eliminates snagging while providing attractive finished appearance
• Full-thread coverage along the 1-3/4" length for maximum grip strength and distribution of clamping force
• Regulatory compliance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for security-critical installations, these tamper-resistant Torx rounded head screws provide reliable protection against unauthorized access in public infrastructure, electrical enclosures, and machinery guarding systems. The 18-8 stainless steel material combined with passivated finish creates a robust barrier against corrosion, making these fasteners ideal for outdoor applications, marine environments, and chemical processing facilities where moisture and corrosive agents are present. The UNC coarse thread spacing with Class 3A fit ensures quick assembly and disassembly when authorized, while maintaining vibration resistance in high-stress applications. The rounded button head profile offers both aesthetic appeal and practical safety by eliminating sharp edges that could cause injury or damage to surrounding materials.

Specification Summary & Compliance

These security fasteners feature precision 8-32 UNC coarse threads with Class 3A fit tolerance for optimal engagement. Manufacturing complies with ASME B18.3 standards for dimensional accuracy and performance. The products are fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety, ensuring environmental responsibility in industrial applications.