S-91900A270 10-32 x 2" 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 design to prevent unauthorized access in security-sensitive environments
• Superior corrosion protection through 18-8 stainless steel construction and passivated surface treatment for extended service life
• Precise thread engagement with Class 3A UNF fine threading ensuring reliable fastening in critical applications
• Optimized head profile featuring rounded button design that provides smooth surface finish while maintaining driving torque capability
• Exceptional mechanical strength delivering 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty fastening requirements
• Full-threaded construction enabling maximum grip length and uniform stress distribution along the entire 2" fastener length
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

These 10-32 UNF Class 3A rounded head screws deliver critical engineering solutions where security, precision, and corrosion resistance are paramount. The 18-8 stainless steel material combined with passivated finish creates a robust barrier against harsh environments, making them ideal for outdoor equipment, marine applications, and chemical processing facilities. The tamper-resistant Torx T25 drive system addresses security concerns in public infrastructure, electronic enclosures, and access panels where vandalism prevention is essential. With fine thread spacing and Class 3A thread fit, these fasteners maintain vibration resistance in machinery, automotive assemblies, and precision instruments where loosening under dynamic loads cannot be tolerated. The fully threaded 2" length provides maximum engagement in thick materials while the rounded button head profile eliminates snagging points in consumer products and medical devices.

Specification Summary & Compliance

Manufactured to exacting dimensional tolerances with Class 3A thread fit per UNF specifications, these screws guarantee precise mating with corresponding threaded components. The 10-32 UNF fine thread configuration with right-hand threading follows standardized industrial practices. Compliance is verified with ASME B18.3 mechanical standards, RoHS 3 (2015/863/EU) directive for hazardous substance restriction, and REACH (EC 1907/2006) regulations for chemical safety, ensuring global market acceptance and environmental responsibility.