S-96452A108 4-40 x 3/8" ASME B18.3, ASTM F835 Steel Button Head Torx Plus Screws
Steel Button Head Torx Plus 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 corrosion resistance with Black-Oxide coating, extending service life in demanding industrial environments
- Exceptional torque transmission through Torx Plus IP8 drive system, minimizing cam-out and tool wear
- High-strength performance with 120,000 psi tensile strength and Rockwell C39 hardness for critical applications
- Precise thread engagement with Class 3A fit ensuring reliable fastening in high-vibration settings
- Optimized head design with rounded button profile providing flush mounting and enhanced aesthetics
- Broad compatibility with UNC coarse threading (4-40) matching standard industrial components
- Full regulatory compliance meeting ASME, ASTM, RoHS 3, and REACH requirements for global supply chain integration
Professional Applications & Engineering Value
These Black-Oxide Alloy Steel rounded head screws deliver exceptional engineering value in precision assembly applications where vibration resistance and consistent clamping force are critical. The Torx Plus T8 drive system prevents stripping and enables higher torque application compared to conventional drives, making them ideal for automated production environments. The Class 3A thread fit with UNC coarse threading ensures rapid installation while maintaining tight tolerances in electronics, machinery, and automotive components. The combination of 120,000 psi tensile strength and corrosion-resistant Black-Oxide treatment provides long-term reliability in harsh operating conditions, reducing maintenance frequency and total cost of ownership.
Specification Summary & Compliance
Manufactured to ASME B18.3 specifications with Class 3A thread fit precision and UNC 4-40 coarse thread spacing. Fully compliant with ASTM F835 material standards, RoHS 3 (2015/863/EU) for hazardous substance restriction, and REACH (EC 1907/2006) regulations. Features include 3/8" length, fully threaded design, and right-hand thread direction for standard industrial applications.
