S-92224A123 4-40 x 1 1/4" ASME B18.6.3 Steel Pan Head Phillips Screws
Steel Pan Head Phillips 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 black oxide coating for extended service life in demanding environments
- Superior mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Optimized drive engagement with Phillips No. 1 drive for efficient installation and reduced cam-out risk
- Precise thread compatibility with 4-40 UNC coarse threads and Class 2A fit ensuring secure fastening in various materials
- Full-threaded design providing maximum grip length and uniform stress distribution along the entire shank
- Standard pan head profile offering excellent bearing surface and clearance for flush mounting applications
- Regulatory compliance meeting ASME B18.6.3 specifications and environmental standards for global industrial use
Professional Applications & Engineering Value
These 4-40 UNC coarse thread pan head Phillips screws deliver exceptional engineering value in industrial assembly applications where vibration resistance and consistent clamping force are critical. The black oxide steel construction provides superior corrosion protection while maintaining the 60,000 psi tensile strength required for demanding mechanical fastening. The combination of fully threaded design and Class 2A thread fit ensures reliable engagement in both metallic and non-metallic materials, while the Phillips No. 1 drive enables efficient installation in high-volume production environments. These screws are particularly valuable in electronics enclosures, machinery guards, and precision equipment where the rounded pan head profile provides both aesthetic appeal and functional clearance.
Specification Summary & Compliance
This fastener maintains precise Class 2A thread fit tolerances per UNC thread standards with 4-40 coarse thread specification. Manufacturing complies with ASME B18.6.3 dimensional requirements, ensuring interchangeability and reliability. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) regulations for chemical safety, making it suitable for global industrial distribution and environmentally conscious manufacturing operations.
