S-90272A117 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
- Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Exceptional mechanical strength with 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Reliable fastening performance through Class 2A thread fit ensuring consistent engagement and vibration resistance
- Optimized drive efficiency with Phillips No. 1 drive for secure torque transmission and reduced cam-out risk
- Versatile installation compatibility featuring 4-40 UNC coarse threads for rapid assembly in various materials
- Full-threaded design providing maximum grip length and load distribution across the entire fastener
- Regulatory compliance assurance meeting ASME B18.6.3 standards for dimensional accuracy and quality
Professional Applications & Engineering Value
These zinc-plated steel rounded head screws deliver critical engineering advantages for industrial assembly applications where corrosion resistance and mechanical reliability are paramount. The combination of 4-40 UNC coarse threading and Class 2A thread fit ensures rapid installation with consistent clamping force, while the pan head profile with Phillips drive provides flush mounting with efficient torque transfer. Engineered to withstand vibration and mechanical stress in heavy-duty applications, these fully threaded screws maintain integrity across temperature variations and harsh operating conditions, making them ideal for machinery, equipment manufacturing, and commercial assemblies requiring dependable fastening solutions.
Specification Summary & Compliance
Manufactured to precise ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent dimensional accuracy. Features 4-40 UNC coarse threads with right-hand orientation and 1 1/4" length. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use in industrial and commercial applications worldwide.
