S-90022A112 4-40 x 5/16" ASME B18.3 Steel Pan Head Torx Screws
Steel Pan Head Torx 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 zinc plating, extending service life in demanding industrial environments.
- Enhanced torque transmission and reduced cam-out provided by the T10 Torx drive for secure, efficient installations.
- Excellent mechanical strength and durability ensured by Rockwell B70 hardness, preventing stripping and head deformation.
- Reliable and fast assembly with a fully threaded 4-40 UNC coarse thread design and Class 2A fit for consistent engagement.
- Broad compatibility and secure fastening due to the standard pan head profile and right-hand thread direction.
- Compliance with major industry standards including ASME B18.3, ensuring quality and interchangeability.
- Safe for regulated applications as they are RoHS 3 and REACH compliant, meeting environmental and safety directives.
Professional Applications & Engineering Value
Engineered for precision and reliability, these 4-40 UNC zinc-plated steel screws are ideal for industrial assemblies requiring robust fastening solutions. The Torx T10 drive minimizes tool slippage, a common issue in high-torque applications, while the coarse thread and Class 2A thread fit ensure quick, secure engagement in various materials. The rounded pan head provides a low-profile, secure fit, and the zinc plating offers essential corrosion resistance, making these screws suitable for electronics, machinery, and automotive components where durability and regulatory compliance are critical. Their fully threaded design maximizes holding power across the entire 5/16" length, delivering consistent performance in repetitive assembly tasks.
Specification Summary & Compliance
These screws feature a 4-40 UNC coarse thread with a Class 2A thread fit for standard dimensional accuracy and ease of assembly. Manufactured in accordance with ASME B18.3 specifications, they ensure reliability and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to environmental and safety standards for industrial use.
