S-91900A918 12-24 x 1/2" ASME B18.3 Tamper-Resistant Torx Stainless Steel Button Head Screws
Tamper-Resistant Torx Stainless Steel Button Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced tamper resistance with T25 Torx drive prevents unauthorized access in secure environments
- Superior corrosion resistance through 18-8 stainless steel construction and passivated finish
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Precise thread engagement with Class 3A thread fit ensures reliable fastening performance
- Full-threaded design provides maximum grip length and holding power
- Rounded button head profile offers a low-profile, aesthetically pleasing finish while minimizing snagging
- Comprehensive compliance with ASME B18.3 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These 12-24 UNC tamper-resistant Torx screws deliver critical security and reliability for industrial applications where unauthorized access poses significant risks. The 18-8 stainless steel construction combined with passivated finish provides exceptional corrosion resistance in harsh environments, while the T25 drive system ensures only authorized personnel can perform maintenance or adjustments. The rounded button head design minimizes protrusion in confined spaces, making these security screws ideal for electronic enclosures, machinery guards, public infrastructure, and transportation equipment. With coarse thread spacing and Class 3A thread fit, these fasteners provide quick installation and secure holding power in various materials, reducing installation time while maintaining the highest security standards.
Specification Summary & Compliance
This security screw features precise 12-24 UNC coarse thread with Class 3A thread fit for superior engagement and meets ASME B18.3 manufacturing specifications. The fastener is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors. Critical dimensions include 0.413" head diameter, 1/2" length, and T25 tamper-resistant Torx drive configuration for consistent performance in security-critical applications.
