S-90517A140 6-32 x 1/4" ASME B18.3 Tamper-Resistant Hex Drive Flat Head Screws
Tamper-Resistant Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Tamper-resistant hex drive prevents unauthorized removal, enhancing security in public or sensitive installations
- 18-8 stainless steel construction provides excellent corrosion resistance and durability in harsh environments
- Passivated finish further boosts corrosion protection, extending service life in industrial applications
- Class 3A thread fit ensures precise, secure fastening with minimal risk of loosening under vibration
- 70,000 psi tensile strength delivers reliable holding power for demanding mechanical assemblies
- Undercut flat head profile allows for flush mounting without protrusion, improving aesthetics and safety
- Full threading maximizes grip length and load distribution across the entire fastener
Professional Applications & Engineering Value
These 6-32 UNC flat head screws are engineered to address critical challenges in industrial fastening, where security, corrosion resistance, and reliability are paramount. The tamper-resistant hex drive deters vandalism and unauthorized access in public infrastructure, electrical enclosures, and machinery guards. Made from 18-8 stainless steel with a passivated finish, they withstand moisture, chemicals, and outdoor exposure, reducing maintenance in HVAC, automotive, and marine applications. The coarse thread spacing and Class 3A thread fit provide quick installation and vibration resistance, while the 82° countersink angle ensures a clean, flush fit in pre-drilled holes. Ideal for securing panels, fixtures, and equipment, these screws offer a robust solution for OEM and MRO needs where compliance and long-term performance are essential.
Specification Summary & Compliance
This product features UNC coarse threads with Class 3A fit for high precision, fully threaded design, and dimensions including 1/4" length and 1/8" tamper-resistant hex drive. Manufacturing and quality adhere to ASME B18.3 specifications, ensuring consistency and interoperability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms environmental safety and restricted substance control, supporting global supply chain requirements.
