S-90279A081 2-56 x 1/2" 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
- Enhanced corrosion resistance with zinc-plated steel construction for extended service life in demanding environments
- Superior holding power with 60,000 psi tensile strength and Rockwell B69 hardness for reliable fastening in industrial assemblies
- Quick and secure installation with Phillips No. 1 drive and rounded head design for efficient torque application
- Optimal thread engagement with coarse UNC threads and Class 2A fit ensuring consistent performance in various materials
- Full-length threading provides maximum grip along the entire 1/2" length for enhanced load distribution
- Regulatory compliance meets ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
- Right-hand thread direction offers standard installation compatibility across industrial equipment and machinery
Professional Applications & Engineering Value
These zinc-plated steel rounded head Phillips screws with 2-56 UNC coarse threading deliver exceptional engineering value in industrial settings where vibration resistance and environmental durability are critical. The combination of 60,000 psi tensile strength and Rockwell B69 hardness ensures reliable performance in metal assemblies, electronic enclosures, and machinery components that experience mechanical stress. The fully threaded design maximizes surface contact for superior pull-out resistance, while the zinc plating provides essential corrosion protection in manufacturing environments. Engineered to ASME B18.6.3 standards, these screws maintain dimensional consistency for repeatable assembly processes, reducing installation time and improving production efficiency in industrial applications requiring precise Class 2A thread fit.
Specification Summary & Compliance
These rounded head screws feature precise Class 2A thread fit with 2-56 UNC coarse threads in the inch measurement system. Manufacturing compliance includes ASME B18.6.3 specifications for dimensional accuracy and performance standards. Environmental compliance is verified through RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) compliance, ensuring adherence to current environmental regulations for industrial components.
