S-90272A128 5-40 x 1/2" 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
- Enhanced corrosion resistance with zinc plating for extended service life in demanding industrial environments
- Superior holding power from fully threaded UNC coarse design ensuring maximum engagement and vibration resistance
- Optimized drive efficiency with Phillips No. 2 head providing reliable torque transfer and reduced cam-out risk
- High-strength performance delivering 60,000 psi tensile strength and Rockwell B70 hardness for heavy-duty applications
- Precision thread fit with Class 2A tolerance ensuring consistent assembly and interchangeability
- Broad compatibility with rounded pan head profile accommodating standard tools and flush mounting requirements
- Regulatory compliance meeting ASME B18.6.3 standards and environmental directives for global supply chain integration
Professional Applications & Engineering Value
These 5-40 UNC zinc-plated steel screws deliver critical reliability in industrial fastening systems where vibration resistance and corrosion protection are paramount. The coarse thread configuration provides rapid installation and superior pull-out strength in softer materials and sheet metal assemblies. With fully threaded design and Class 2A fit, these rounded head Phillips screws maintain consistent clamping force across the entire 1/2" length, preventing loosening in high-stress applications. The zinc-plated steel construction combined with 60,000 psi tensile strength ensures durable performance in electrical enclosures, machinery guards, and automotive components where environmental exposure and mechanical loads challenge fastener integrity.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit ensuring dimensional accuracy and interchangeability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Features UNC coarse threads with right-hand direction and standardized pan head profile with Phillips No. 2 drive for consistent installation performance across industrial applications.
