S-90484A145 8-32 x 1" 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
- Superior tamper resistance with specialized hex drive design to prevent unauthorized access in secure environments
- Exceptional durability through Rockwell C39 hardness and 130,000 psi tensile strength for heavy-duty applications
- Enhanced corrosion protection from black-oxide coating on alloy steel for extended service life
- Precise thread engagement with Class 3A fit ensuring reliable fastening in critical assemblies
- Optimized installation efficiency through coarse UNC threading and fully threaded design
- Broad industrial compatibility with rounded button head profile accommodating various surface requirements
- Regulatory compliance assurance meeting ASME, ASTM, RoHS 3, and REACH standards for global applications
Professional Applications & Engineering Value
These 8-32 UNC thread screws with black-oxide alloy steel construction address critical industrial fastening challenges where security, strength, and environmental resistance are paramount. The tamper-resistant hex drive provides essential security for public infrastructure, electrical enclosures, and machinery requiring controlled access. The Class 3A thread fit ensures precise engagement in high-vibration environments, while the coarse thread spacing facilitates rapid installation in production settings. With 130,000 psi tensile strength and Rockwell C39 hardness, these rounded head screws maintain integrity under extreme mechanical stress, making them ideal for automotive assemblies, industrial equipment, and construction applications demanding reliable, long-term fastening solutions.
Specification Summary & Compliance
Manufactured to exacting Class 3A thread fit tolerances with UNC coarse threading and 8-32 thread size. Fully compliant with ASME B18.3 specifications where identified as ASTM F835, ensuring dimensional accuracy and performance reliability. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, confirming suitability for regulated industrial markets and international supply chains.
