S-90279A076 2-56 x 3/16" ASME B18.6.3 Steel Round Head Phillips Screws
Steel Round 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, extending service life in demanding industrial environments
- Excellent holding power from fully threaded design and coarse UNC threading, ensuring reliable fastening in various materials
- High tensile strength rating of 60,000 psi provides dependable performance under mechanical stress and vibration
- Precise Class 2A thread fit enables smooth installation and consistent engagement with mating components
- Convenient Phillips drive (No. 1 size) allows for efficient installation with standard tools while minimizing cam-out risk
- Optimized rounded head profile offers clean appearance and reduces potential for snagging in assembled applications
- Comprehensive regulatory compliance including ASME B18.6.3, RoHS 3, and REACH ensures quality and environmental responsibility
Professional Applications & Engineering Value
These 2-56 UNC zinc-plated steel screws deliver exceptional performance in precision assembly applications where reliability and corrosion resistance are critical. The rounded head design with Phillips drive provides both aesthetic appeal and practical installation benefits, while the coarse thread configuration ensures rapid assembly and superior resistance to vibration loosening. Engineered with Rockwell B69 hardness and 60,000 psi tensile strength, these fasteners maintain integrity in high-stress environments common in electronics enclosures, machinery components, and automotive assemblies. The zinc plating creates a protective barrier against oxidation, making these industrial screws suitable for both indoor and moderate outdoor applications where environmental factors are a concern.
Specification Summary & Compliance
This 2-56 UNC screw features precise Class 2A thread fit tolerances with fully threaded design measuring 3/16" in length. Manufactured to ASME B18.6.3 specifications for dimensional accuracy and performance reliability. Compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations for chemical safety. The inch system measurements ensure compatibility with North American equipment and standards.
