S-90272A554 1/4"-20 x 3" 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
- Excellent driving torque transmission through Phillips No. 3 drive design, reducing cam-out and tool wear
- High tensile strength rating of 60,000 psi ensures reliable performance under heavy loads and vibration
- Rockwell B70 hardness provides exceptional durability and resistance to deformation during installation
- Class 2A thread fit with UNC coarse spacing enables quick assembly and reliable fastening in various materials
- Fully threaded design offers maximum grip length and uniform stress distribution along the entire fastener
- Pan head profile with standard rounded design provides a finished appearance while accommodating standard wrench sizes
Professional Applications & Engineering Value
This zinc-plated steel rounded head screw delivers exceptional performance in industrial assembly applications where corrosion resistance and high tensile strength are critical. The fully threaded UNC coarse spacing design ensures rapid installation in metal, wood, and composite materials, while the Phillips No. 3 drive provides secure torque transmission without stripping. Engineered with Rockwell B70 hardness, this fastener maintains structural integrity under repeated stress cycles, making it ideal for machinery, equipment manufacturing, and structural frameworks where vibration resistance and long-term reliability are paramount. The 3-inch length and Class 2A thread fit guarantee precise engagement in deep-set applications across various industrial sectors.
Specification Summary & Compliance
This 1/4"-20 x 3" rounded head screw features precise Class 2A thread fit with UNC coarse thread spacing and right-hand threading. Manufactured to ASME B18.6.3 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The fastener maintains dimensional accuracy with 0.492" head diameter and 0.175" head height, ensuring consistent performance across industrial applications.
