S-92224A221 1/4"-20 x 1/2" 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
- Superior corrosion resistance with black oxide steel coating for extended service life in demanding environments
- Excellent drive stability through Phillips No. 3 drive design preventing cam-out and ensuring secure installation
- Optimized load distribution with pan head design that provides superior clamping force across wider surface areas
- Reliable thread engagement through UNC coarse threading with Class 2A fit for quick assembly and vibration resistance
- High mechanical strength delivering 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Full threading capability ensuring maximum grip length and uniform stress distribution along the entire fastener
- Regulatory compliance assurance meeting ASME B18.6.3, RoHS 3, and REACH standards for global industrial use
Professional Applications & Engineering Value
These black oxide steel Phillips pan head screws provide engineering solutions where corrosion resistance and high tensile strength are critical. The combination of UNC coarse threading and Class 2A fit ensures rapid installation in production environments while maintaining vibration resistance in machinery assemblies. The pan head design with rounded profile offers superior bearing surface for secure fastening in industrial equipment, automotive components, and metal fabrication applications. The fully threaded configuration maximizes engagement depth, making these 1/4"-20 machine screws ideal for applications requiring consistent clamping force across varying material thicknesses.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance and UNC coarse thread specification. Complies with ASME B18.6.3 mechanical standards for slotted and Phillips drive machine screws. Meets environmental regulations including RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) requirements for substance restrictions. The black oxide surface treatment provides corrosion protection while maintaining dimensional accuracy for reliable performance in industrial fastening applications.
