S-92703A203 4-40 x 3/16" ASME B18.3 Stainless Steel Torx Flat Head Screws
Stainless Steel Torx Flat Head 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 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
- Enhanced torque transmission and reduced cam-out thanks to the Torx Plus IP8 drive system for secure, efficient installation
- High mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for reliable, long-lasting fastening
- Secure flush mounting with standard 82° countersink angle and flat head design for smooth, unobtrusive surfaces
- Wide compatibility and easy assembly with fully threaded 4-40 UNC coarse threads and Class 2A fit for quick, precise engagement
- Regulatory compliance assurance meeting ASME B18.3, RoHS 3, and REACH standards for safe, quality-driven applications
- Durable performance in demanding settings due to robust material and design, reducing maintenance and replacement needs
Professional Applications & Engineering Value
Engineered for precision and reliability, these 4-40 UNC flat head screws address critical industrial challenges such as vibration loosening and environmental degradation. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to corrosion and wear, making them suitable for machinery, electronics, and outdoor equipment. The Torx Plus IP8 drive ensures high torque transfer with minimal tool wear, while the fully threaded coarse design and 82° countersink enable secure, flush installations in metal, plastic, and composite assemblies. These features collectively enhance assembly efficiency, reduce downtime, and support long-term operational integrity in industrial fastening applications.
Specification Summary & Compliance
This product adheres to Class 2A thread fit and UNC coarse threading standards, ensuring dimensional accuracy and interchangeability. It complies with ASME B18.3 for consistent manufacturing quality, and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting environmental and safety standards in global supply chains.
