S-90272A114 4-40 x 7/8" 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, ensuring long-term reliability in harsh industrial environments
- High tensile strength of 60,000 psi provides exceptional load-bearing capacity for demanding mechanical assemblies
- Rockwell B70 hardness delivers excellent wear resistance and durability under repeated stress
- Coarse UNC threading with Class 2A fit enables quick installation and secure fastening in various materials
- Fully threaded design maximizes grip length and provides consistent holding power along the entire screw length
- Phillips drive with rounded pan head offers comfortable installation and a finished appearance while preventing surface damage
- Comprehensive regulatory compliance including ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental safety
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head screws are engineered to address critical fastening challenges in industrial applications. The combination of zinc-plated steel and coarse thread design provides excellent corrosion resistance and rapid installation in metal assemblies, electronic enclosures, and machinery components. The fully threaded configuration ensures maximum thread engagement, distributing stress evenly to prevent loosening under vibration. With 60,000 psi tensile strength and Rockwell B70 hardness, these Phillips drive screws maintain integrity in high-stress environments while the rounded pan head offers a clean, professional finish. Ideal for industrial fasteners requiring reliable performance and regulatory compliance.
Specification Summary & Compliance
These screws feature precise Class 2A thread fit per UNC standards with 7/8" length and 4-40 thread size. Manufacturing conforms to ASME B18.6.3 specifications ensuring dimensional accuracy and performance consistency. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory adherence for industrial applications worldwide.
