S-91870A745 12-24 x 1/2" ASME B18.3 Tamper-Resistant Torx Plus Stainless Steel Flat Head Screws
Tamper-Resistant Torx Plus Stainless Steel Flat 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 specialized Torx Plus IPR20 drive for superior security in restricted-access environments
- Exceptional corrosion protection through 18-8 stainless steel construction and passivated surface treatment
- Optimized flush mounting with undercut flat head design that prevents surface protrusion and improves aesthetics
- Reliable thread engagement with Class 2A fit UNC coarse threads ensuring consistent fastening performance
- High mechanical strength delivering 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Full-threaded design providing maximum grip length and superior holding power across the entire fastener
- Industry-standard compliance meeting ASME B18.3 specifications for guaranteed dimensional accuracy and performance
Professional Applications & Engineering Value
These 12-24 UNC flat head screws deliver critical engineering solutions where security, corrosion resistance, and flush mounting are paramount. The combination of 18-8 stainless steel material and passivated finish provides exceptional protection against harsh environments, making them ideal for outdoor equipment, marine applications, and chemical processing facilities. The tamper-resistant Torx Plus IPR20 drive prevents unauthorized access in public infrastructure, security panels, and high-value equipment. The undercut flat head profile ensures perfect countersinking without surface protrusion, while the coarse thread spacing and Class 2A thread fit enable quick installation and reliable performance in vibration-prone applications. These industrial fasteners are engineered to maintain integrity in demanding conditions where standard fasteners would fail.
Specification Summary & Compliance
Manufactured to precise ASME B18.3 standards with Class 2A thread fit for consistent dimensional accuracy. Features UNC coarse threads (12-24 size) with right-hand threading and standard 82° countersink angle. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industries and applications.
