S-90272A398 1/4"-20 x 1 3/8" 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 load-bearing applications
- Optimized installation efficiency through Phillips No. 3 drive and fully threaded UNC coarse thread design
- Secure fastening performance with Class 2A thread fit ensuring consistent engagement and vibration resistance
- Versatile rounded pan head profile providing a finished appearance while accommodating standard tools
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards
- Broad industrial compatibility with 1/4"-20 thread size and 1-3/8" length for diverse fastening requirements
Professional Applications & Engineering Value
These zinc-plated steel screws deliver critical performance advantages for industrial assembly operations. The combination of 60,000 psi tensile strength and Rockwell B70 hardness ensures reliable performance under mechanical stress, while the zinc plating provides essential corrosion protection for extended service life. The fully threaded UNC coarse thread design enables rapid installation and superior pull-out resistance in various materials. The Phillips pan head configuration offers both aesthetic appeal and practical tool engagement, making these rounded head screws ideal for machinery assembly, electrical enclosures, and structural applications where vibration resistance and durability are paramount.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 2A thread fit tolerance for consistent performance. Complies with ASME B18.6.3 mechanical and dimensional specifications, ensuring interchangeability and reliability. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features 1/4"-20 UNC coarse threads with full threading along the 1-3/8" length, providing maximum engagement strength for industrial fastening applications.
