S-90273A447 1/2"-13 x 1 1/2" ASME B18.6.3 Steel Phillips Flat Head Screws
Steel Phillips Flat Head 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
- Exceptional corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments.
- Reliable high-strength fastening with 60,000 psi tensile strength and Rockwell B70 hardness, preventing failure under heavy loads.
- Optimized flush installation thanks to the standard flat head profile and 82° countersink angle for a smooth, secure surface finish.
- Effortless installation and removal with the Phillips No. 4 drive, reducing assembly time and tool wear.
- Consistent thread engagement through fully threaded design and Class 2A fit, minimizing loosening in vibration-prone applications.
- Broad compatibility with coarse UNC threading (1/2"-13) and right-hand direction, suitable for standard inch-based assemblies.
- Compliance with rigorous standards including ASME B18.6.3, RoHS 3, and REACH, ensuring safety and environmental responsibility.
Professional Applications & Engineering Value
Engineered for industrial fastening in machinery, automotive, and construction sectors, this zinc-plated steel flat head screw addresses critical needs for durability and precision. The UNC coarse thread and Class 2A fit provide excellent grip in soft materials and reduce cross-threading risks, while the fully threaded design ensures uniform stress distribution. With a Phillips drive and 82° countersink, it enables quick, flush installations that resist tampering and vibration. Ideal for heavy-duty applications, it combines 60,000 psi tensile strength with corrosion-resistant plating to extend service life in harsh conditions, minimizing maintenance and replacement costs.
Specification Summary & Compliance
This screw features precise Class 2A thread fit per UNC standards, with a 1/2"-13 coarse thread spacing and right-hand direction. It complies with ASME B18.6.3 manufacturing specifications for dimensional accuracy and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring adherence to environmental and safety regulations for industrial use.
