S-91900A833 10-32 x 1" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Enhanced tamper resistance with specialized Torx T25 drive for superior security in restricted access areas
• Exceptional corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
• Precise thread engagement with Class 3A UNF fine threads ensuring reliable fastening in critical applications
• Maximum load distribution from the rounded button head design reducing surface stress and material damage
• Superior mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty use
• Full-threaded design providing consistent holding power across the entire 1-inch length
• Regulatory compliance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 10-32 UNF Class 3A tamper-resistant Torx screw delivers critical security and reliability for industrial applications where unauthorized access prevention is paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional resistance to corrosion and chemical exposure, making it ideal for harsh environments including outdoor equipment, marine applications, and chemical processing facilities. The T25 tamper-resistant drive system ensures that only authorized personnel with specialized tools can install or remove these fasteners, providing vital security for public infrastructure, electrical enclosures, and machinery protection. The rounded head profile offers improved aesthetics while minimizing snagging hazards in applications requiring smooth surfaces. With its fine UNF threading and Class 3A fit, this security screw maintains precise tolerances for vibration-resistant connections in automotive, aerospace, and precision manufacturing applications.

Specification Summary & Compliance

This security fastener features precision 10-32 UNF Class 3A threads with right-hand orientation and fine thread spacing, manufactured to exacting dimensional standards. The screw maintains 0.19" thread diameter with 0.361" head diameter and 1" fully threaded length for consistent performance. Compliance includes ASME B18.3 specifications for dimensional accuracy and mechanical properties. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use across various industrial sectors without hazardous substance restrictions.