S-90272A402 1/4"-20 x 4 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 holding power with 60,000 psi tensile strength and Rockwell B70 hardness for reliable fastening performance
- Quick installation with Phillips No. 3 drive and fully threaded UNC coarse thread design
- Consistent engagement with Class 2A thread fit ensuring precise mating with standard nuts and components
- Broad compatibility with pan head design fitting standard countersunk applications
- Regulatory compliance meeting ASME B18.6.3 specifications for dimensional accuracy and performance
- Environmental safety with RoHS 3 and REACH compliance for responsible manufacturing standards
Professional Applications & Engineering Value
These zinc-plated steel screws deliver exceptional performance in industrial applications where vibration resistance and long-term reliability are critical. The fully threaded UNC coarse thread design provides maximum surface contact for superior pull-out resistance, while the Phillips pan head configuration offers excellent torque transmission during installation. The Class 2A thread fit ensures consistent engagement with mating components, reducing assembly time and improving production efficiency. Ideal for machinery assembly, structural frameworks, and heavy equipment manufacturing, these screws maintain integrity under significant mechanical stress with their 60,000 psi tensile strength rating, making them suitable for high-load applications where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit tolerances for precise dimensional accuracy. Features 1/4"-20 UNC coarse threads with right-hand threading direction and fully threaded shank design. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to international safety and sustainability requirements for industrial components.
