S-96075A106 4-40 x 1/2" ASME B18.3 Tamper-Resistant Torx Steel Button Head Screws
Tamper-Resistant Torx 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 T8 Torx drive design to prevent unauthorized access in sensitive applications.
- Superior corrosion protection from Black-Oxide coating, extending service life in harsh industrial environments.
- High tensile strength of 130,000 psi ensures reliable fastening under heavy loads and vibrations.
- Precise Class 3A thread fit for smooth installation and secure, vibration-resistant connections.
- Fully threaded 4-40 UNC coarse spacing provides maximum grip and holding power across the entire length.
- Durable Alloy Steel construction with Rockwell C38 hardness for long-term performance and wear resistance.
- Rounded button head profile offers a low-profile, aesthetically clean finish while reducing snagging risks.
Professional Applications & Engineering Value
These 4-40 UNC Black-Oxide Alloy Steel Rounded Head Screws are engineered to address critical challenges in industrial and security-focused settings. The tamper-resistant T8 Torx drive effectively deters unauthorized disassembly, making them ideal for public infrastructure, electronic enclosures, and machinery requiring controlled access. Made from high-strength Alloy Steel and treated with a Black-Oxide finish, they resist corrosion and wear in demanding conditions, reducing maintenance frequency. The fully threaded coarse UNC design ensures rapid installation and robust clamping force, while the rounded head minimizes protrusion for safer operation. Complying with ASME B18.3, they deliver consistent dimensional accuracy and reliability for OEM assemblies, aerospace components, and automotive systems where precision and durability are paramount.
Specification Summary & Compliance
This screw features a 4-40 UNC thread with Class 3A fit for high precision and vibration resistance, fully threaded along a 1/2" length. Manufacturing adheres to ASME B18.3 specifications, ensuring dimensional consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and restricted substance control for global industrial use.
