S-96452A456 4-40 x 3/16" 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 and reduced cam-out using the Torx Plus IP8 drive, ensuring secure fastening and minimizing tool wear.
- High tensile strength of 120,000 psi provides reliable performance under significant stress and vibration.
- Precise Class 3A thread fit ensures consistent, secure engagement for high-reliability assemblies.
- Fully threaded design offers maximum grip and holding power along the entire fastener length.
- Rounded button head profile delivers a low-profile, finished appearance while reducing surface snagging.
- Compliance with major industry and environmental standards guarantees quality and regulatory acceptance for global supply chains.
Professional Applications & Engineering Value
This 4-40 UNC Torx Plus screw is engineered for precision assemblies where reliability is non-negotiable. The Black-Oxide Alloy Steel construction resists corrosion, making it suitable for electronics, machinery, and automotive components exposed to oils and mild moisture. The Torx Plus T8 drive minimizes stripping and allows higher torque application compared to standard drives, reducing assembly errors and rework. With a coarse UNC thread and Class 3A fit, it ensures quick, secure fastening in metals and plastics, while the rounded head provides a flush finish that prevents interference in tight spaces. Ideal for OEMs and MRO applications requiring consistent, high-strength fastening solutions.
Specification Summary & Compliance
This screw meets ASME B18.3 specifications for dimensional consistency and performance. Threads conform to UNC coarse thread standards with a Class 3A fit for superior precision. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it is free of restricted hazardous substances. Manufactured from Alloy Steel with a Rockwell C39 hardness, it guarantees durability and repeatable performance in regulated industrial settings.
