S-90517A412 10-32 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
- Tamper-resistant hex drive prevents unauthorized removal, enhancing security in public or high-risk environments
- 18-8 stainless steel construction with passivated finish delivers excellent corrosion resistance for long-lasting performance in harsh conditions
- Class 3A thread fit ensures precise, tight engagement with mating parts, reducing the risk of loosening under vibration
- High tensile strength of 70,000 psi provides reliable load-bearing capacity for demanding mechanical applications
- Rockwell B55 hardness offers superior durability and resistance to wear during installation and use
- Fully threaded design allows for maximum grip length and uniform stress distribution along the entire fastener
- 82° countersink angle enables flush mounting for a clean, professional finish in assembled products
Professional Applications & Engineering Value
This 10-32 UNF flat head screw is engineered to address critical challenges in industrial and security-focused applications. The combination of 18-8 stainless steel and passivated finish provides exceptional resistance to corrosion, making it ideal for outdoor equipment, marine components, and chemical processing facilities where moisture and chemicals are present. The tamper-resistant hex drive is specifically designed to prevent vandalism and unauthorized access in public infrastructure, electrical enclosures, and transportation systems. With its UNF fine thread and Class 3A fit, this screw delivers superior holding power in precision assemblies, reducing the risk of thread stripping and maintaining integrity in high-vibration environments like machinery and automotive systems.
Specification Summary & Compliance
This flat head screw features a 10-32 UNF thread size with Class 3A thread fit for high precision and tight tolerances. It complies with ASME B18.3 manufacturing standards, ensuring consistent quality and dimensional accuracy. The product is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.
