S-97690A147 4-40 x 3/16" ASME B18.6.3 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-plated steel construction, extending service life in demanding industrial environments
- Enhanced torque transmission and reduced cam-out with Torx T10 drive, ensuring secure fastening and minimizing tool slippage
- High mechanical strength and durability from Rockwell B70 hardness, providing reliable performance under stress
- Maximum grip and holding power due to fully threaded coarse UNC design, ideal for rapid assembly in various materials
- Consistent, reliable thread engagement with Class 2A thread fit, ensuring precise assembly and reducing cross-threading risks
- Low-profile, rounded pan head design offers a finished appearance and reduces snagging in confined spaces
- Black painted finish provides additional corrosion protection and allows for color coding in assembled products
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel screws with Torx T10 drive are engineered to solve common industrial fastening challenges. The combination of zinc-plated steel and black painted finish provides dual-layer corrosion protection, making them ideal for electronics enclosures, machinery panels, and outdoor equipment where environmental resistance is critical. The rounded pan head design distributes clamping force evenly while maintaining a low profile, preventing damage to surrounding components. With coarse UNC threads and full threading, these screws offer quick installation and superior pull-out resistance in metal, plastic, and composite materials, reducing assembly time while maintaining joint integrity in vibration-prone applications.
Specification Summary & Compliance
These screws feature precision Class 2A thread fit with 4-40 UNC coarse threads and right-hand threading for standard industrial applications. Manufacturing complies with ASME B18.6.3 specifications, ensuring dimensional accuracy and performance reliability. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global supply chains and sensitive applications requiring restricted substance control.
