S-90910A783 4-40 x 1/8" ASME B18.3 Stainless Steel Button Head Torx Plus Screws
Stainless 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 18-8 stainless steel and passivated finish, ideal for harsh industrial environments.
- Enhanced torque transmission and reduced cam-out thanks to the Torx Plus drive (IP8/T8), ensuring secure fastening and tool longevity.
- High tensile strength of 60,000 psi and Rockwell B55 hardness for reliable performance under significant load.
- Wide compatibility and easy installation with standard 4-40 UNC coarse threads and Class 2A fit, suitable for various assemblies.
- Low-profile, rounded button head design provides a smooth finish, reducing snagging and improving safety.
- Full threading along the 1/8" length ensures maximum grip and uniform clamping force across the entire engagement.
- Compliance with major standards including ASME B18.3, RoHS 3, and REACH, guaranteeing quality and environmental safety.
Professional Applications & Engineering Value
Engineered for precision and durability, these 4-40 UNC Torx Plus rounded head screws address common industrial challenges such as fastener failure and corrosion. The 18-8 stainless steel construction, combined with a passivated finish, offers excellent resistance to rust and chemicals, making them ideal for electronics, machinery, and outdoor equipment. The Torx Plus drive minimizes slippage, allowing for higher torque application and reducing assembly time. With a right-hand thread and coarse spacing, they provide quick and secure fastening in materials where vibration resistance is critical. These screws are a trusted solution for applications demanding high tensile strength and regulatory compliance, ensuring long-term reliability in demanding environments.
Specification Summary & Compliance
This screw features precise Class 2A thread fit and UNC thread type for consistent performance. It is manufactured in accordance with ASME B18.3 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards.
