S-90517A112 6-32 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 secure applications
- Exceptional corrosion resistance through 18-8 stainless steel construction and passivated surface treatment
- High mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding environments
- Precise thread engagement with Class 3A thread fit ensuring reliable fastening in industrial assemblies
- Optimized installation with standard 82° countersink angle for flush mounting in various materials
- Enhanced durability through fully threaded UNC coarse spacing design for maximum holding power
- Regulatory compliance meeting ASME B18.3 standards and environmental regulations for global applications
Professional Applications & Engineering Value
These 18-8 stainless steel flat head screws with tamper-resistant hex drive provide critical security fastening solutions for industrial equipment, public infrastructure, and electronic enclosures where unauthorized access prevention is paramount. The combination of passivated finish and stainless steel material ensures long-term performance in corrosive environments, while the UNC coarse thread with Class 3A fit delivers reliable engagement in various substrates. Engineering teams specify these security screws for applications requiring both vandal resistance and environmental durability, from outdoor control panels to medical devices, where the 82° countersink provides clean, flush installation without compromising structural integrity.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 specifications with Class 3A thread fit tolerance for precision fastening. Features UNC coarse thread (6-32) with right-hand direction and standard flat head profile. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial markets requiring certified components.
