S-90484A137 8-32 x 3/8" ASME B18.3, ASTM F835 Tamper-Resistant Hex-Drive Steel Button Head Screws
Tamper-Resistant Hex-Drive Steel Button 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 hex drive design prevents unauthorized removal in security-sensitive applications
- Superior corrosion protection through black-oxide coating extends service life in demanding industrial environments
- Exceptional mechanical strength with 130,000 psi tensile strength and Rockwell C39 hardness withstands high-stress applications
- Precision thread engagement with Class 3A fit ensures reliable, vibration-resistant fastening in critical assemblies
- Optimized drive performance using 5/32" tamper-resistant hex drive provides secure installation while preventing tool slippage
- Versatile rounded button head profile offers both aesthetic appeal and reduced snagging in confined spaces
- Full regulatory compliance meets ASME B18.3, RoHS 3, and REACH standards for global industrial applications
Professional Applications & Engineering Value
Engineered for security-critical installations and industrial maintenance, these 8-32 UNC tamper-resistant hex screws address common fastening challenges in public infrastructure, electrical enclosures, and machinery protection. The black-oxide alloy steel construction provides superior corrosion resistance compared to standard finishes, while the Class 3A thread fit maintains precise tolerances for vibration-prone environments. The rounded button head design minimizes protrusion risks in accessible areas, making these security screws ideal for applications where both tamper-resistance and user safety are paramount. With coarse threading and full threading along the 3/8" length, installation efficiency is maximized without compromising holding power in various material substrates.
Specification Summary & Compliance
These rounded head screws feature precision 8-32 UNC coarse threads with Class 3A fit for superior thread engagement. Manufacturing complies with ASME B18.3 specifications (ASTM F835) ensuring dimensional accuracy and performance reliability. The fasteners are fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting international environmental and safety standards for industrial components.
