S-90517A312 10-24 x 1/2" ASME B18.3 Tamper-Resistant Hex Drive Flat Head Screws
Tamper-Resistant Hex Drive 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
- Superior tamper resistance with specialized hex drive design to prevent unauthorized removal in high-security environments
- Exceptional corrosion resistance through 18-8 stainless steel construction and passivated surface treatment for long-term reliability
- Precise thread engagement with Class 3A fit ensuring secure fastening and vibration resistance in demanding applications
- High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty performance
- Optimized head design featuring standard 82° countersink angle for flush mounting and clean aesthetic finish
- Full threading coverage along the 1/2" length provides maximum grip and load distribution
- Industry compliance assurance meeting ASME B18.3 specifications for consistent quality and performance
Professional Applications & Engineering Value
These 10-24 UNC flat head security screws deliver critical protection against tampering while maintaining structural integrity in industrial settings. The 18-8 stainless steel composition, enhanced by passivated finish, resists chemical exposure and environmental corrosion in manufacturing facilities, outdoor equipment, and public infrastructure. The tamper-resistant hex drive system prevents unauthorized access to sensitive machinery, electrical enclosures, and security systems while the coarse thread spacing ensures rapid installation and superior holding power in various substrates. Engineers specify these fasteners for applications requiring both security and durability, where Class 3A thread fit guarantees precise alignment and reliable performance under vibration and dynamic loads.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision and UNC coarse thread profile. The 10-24 thread size features 0.19" diameter with full threading along the 1/2" length. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors. The 82° countersink angle conforms to standard flat head specifications for proper seating in prepared surfaces.
