S-97690A142 2-56 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 and black painted finish for extended service life in harsh environments
- Enhanced torque transmission through T8 Torx drive system, reducing cam-out and tool slippage during installation
- Reliable thread engagement with Class 2A thread fit and 2-56 UNC coarse threading for secure fastening in various materials
- Optimized clamping force distribution thanks to rounded pan head design that minimizes surface damage
- Maximum holding power achieved through fully threaded design along the entire 3/16" length
- Consistent mechanical performance ensured by Rockwell B70 hardness rating for durable fastening applications
- Broad regulatory compliance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws with T8 Torx drive address critical industrial fastening challenges where vibration resistance and corrosion protection are paramount. The combination of 2-56 UNC coarse threading and Class 2A thread fit ensures reliable installation in various substrates while minimizing cross-threading risks. The fully threaded design provides consistent clamping force along the entire 3/16" length, making them ideal for electronic enclosures, machinery panels, and automotive assemblies where space constraints exist. The black painted finish over zinc plating creates a dual-layer protective system that withstands environmental exposure, while the rounded pan head profile distributes seating pressure evenly without marring sensitive surfaces.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specifications. These screws conform to ASME B18.6.3 mechanical and dimensional requirements, ensuring interchangeability and reliable performance. Environmental compliance includes RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) compliance for chemical safety. The Rockwell B70 hardness provides consistent mechanical properties batch-to-batch for engineering-critical applications.
