S-97690A146 2-56 x 1/2" 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
- Enhanced corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments
- Superior torque transmission through T8 Torx drive design, reducing cam-out risks and tool wear during installation
- Reliable thread engagement with UNC coarse threading and Class 2A fit, ensuring consistent fastening performance
- Optimized mechanical strength with Rockwell B70 hardness, providing excellent resistance to deformation under load
- Secure regulatory compliance meeting ASME B18.6.3 standards plus RoHS 3 and REACH environmental directives
- Visual identification advantage with black painted head for easy component recognition in assembly operations
- Full-threaded design enabling maximum grip length and uniform stress distribution along the entire fastener
Professional Applications & Engineering Value
These zinc-plated steel Torx pan head screws deliver critical performance advantages for industrial assembly applications where vibration resistance and long-term reliability are paramount. The combination of UNC coarse threading and Class 2A thread fit ensures rapid installation with minimal cross-threading risks, while the T8 Torx drive system provides superior torque transfer compared to traditional drive types. The rounded pan head profile offers a low-profile seating surface that distributes clamping force evenly, making these 2-56 machine screws ideal for electronic enclosures, machinery panels, and automotive components where space constraints and corrosion resistance are significant considerations. The black painted head finish facilitates visual quality control in high-volume manufacturing environments.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerances and UNC coarse thread specifications. Fully compliant with ASME B18.6.3 mechanical standards for dimensional and mechanical requirements. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance for restricted substances and REACH (EC 1907/2006) requirements for chemical safety. The zinc-plated steel construction provides corrosion protection while maintaining Rockwell B70 hardness for mechanical durability.
