S-90272A325 4-40 x 1 5/8" 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
- Enhanced corrosion resistance with zinc plating for reliable performance in demanding industrial environments
- Superior holding power with fully threaded design ensuring maximum grip and vibration resistance
- High tensile strength of 60,000 psi provides dependable load-bearing capacity for critical assemblies
- Rockwell B70 hardness maintains thread integrity and prevents stripping during installation
- Class 2A thread fit offers consistent engagement and easy assembly while maintaining precision
- Phillips drive compatibility enables efficient installation with standard tools, reducing assembly time
- Coarse UNC threading ensures quick fastening and reliable performance in various materials
Professional Applications & Engineering Value
These 4-40 UNC zinc-plated steel rounded head Phillips screws deliver exceptional engineering value across industrial applications where reliability and compliance are paramount. The zinc-plated steel construction provides essential corrosion protection for machinery, electrical enclosures, and automotive components exposed to harsh conditions. The coarse thread design ensures rapid installation and secure fastening in metals, plastics, and composite materials, while the fully threaded configuration maximizes surface contact for superior vibration resistance. The pan head profile with Phillips drive offers excellent torque transmission and flush mounting capabilities, making these screws ideal for assembly lines requiring consistent performance and regulatory compliance.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit standards with UNC coarse threading for consistent performance. These screws meet ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The 1 5/8" length with standard pan head profile maintains dimensional consistency for reliable integration into existing assembly systems.
