S-91997A215 10-24 x 1" ASME B18.3 Sealing Tamper-Resistant Torx Stainless Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh environments
• Enhanced security and tamper-resistance with specialized Torx T25 drive that prevents unauthorized access or removal
• Reliable pressure sealing up to 1500 psi with integrated Buna-N rubber O-ring, maintaining integrity across wide temperature ranges (-40° to 225°F)
• Precise thread engagement with Class 3A fit and UNC coarse threading ensuring secure fastening in demanding applications
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-duty industrial use
• Optimized head design with rounded button profile providing smooth surface finish and reduced snagging in assembled components
• Full regulatory compliance meeting ASME B18.3 standards while being RoHS 3 and REACH compliant for global industrial applications

Professional Applications & Engineering Value

These 10-24 UNC rounded head screws deliver critical engineering solutions where both security and sealing performance are paramount. The combination of 18-8 stainless steel material with passivated finish provides exceptional corrosion resistance for outdoor equipment, marine applications, and chemical processing environments. The tamper-resistant Torx T25 drive prevents unauthorized access in public infrastructure, transportation, and security systems, while the integrated Buna-N rubber O-ring creates reliable seals in hydraulic systems, pneumatic equipment, and fluid handling applications. The Class 3A thread fit ensures precise engagement in high-vibration environments, making these fully threaded screws ideal for industrial machinery, electronic enclosures, and automotive assemblies where pressure integrity up to 1500 psi must be maintained.

Specification Summary & Compliance

These screws feature precision 10-24 UNC coarse threads with Class 3A fit for superior thread engagement. Manufacturing complies with ASME B18.3 specifications for dimensional accuracy and performance. The products are fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental standards. Additional specifications include 1" length, 0.361" head diameter, and maximum hole diameter compatibility of 0.2".