S-97690A151 4-40 x 3/8" 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, ideal for harsh industrial environments.
- Enhanced torque transmission and reduced cam-out thanks to the Torx T10 drive, ensuring secure fastening.
- Excellent durability and material strength provided by Rockwell B70 hardness, resisting wear and deformation.
- Reliable and quick installation with a fully threaded, coarse UNC design and Class 2A thread fit for consistent engagement.
- Low-profile, rounded pan head offers a finished appearance and sits flush in applications where clearance is a concern.
- Broad regulatory compliance including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and environmental standards are met.
- Distinctive black painted finish provides both aesthetic appeal and an additional layer of protection.
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel screws are engineered to solve critical fastening challenges in industrial and machinery applications. The combination of a Torx T10 drive and a rounded pan head provides superior grip and a low-profile installation, minimizing the risk of tool slippage and head stripping in high-torque scenarios. The coarse thread and Class 2A thread fit ensure rapid assembly and a reliable hold in materials like metal and hard plastics, reducing assembly time and improving production efficiency. The zinc plating and black painted finish offer dual-layer corrosion protection, making these machine screws a durable, long-lasting solution for electronics, automotive assemblies, and other precision equipment where vibration resistance and a professional finish are paramount.
Specification Summary & Compliance
This product features a 4-40 UNC thread with a Class 2A thread fit, ensuring precise dimensional accuracy and interchangeability. Manufacturing and quality are governed by the ASME B18.6.3 specification. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming they are free of restricted hazardous substances and safe for use in various markets.
