S-90273A448 1/2"-13 x 1 3/4" 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
- Superior corrosion resistance with zinc-plated steel construction, ensuring long-lasting performance in demanding industrial environments.
- High-strength reliability with 60,000 psi tensile strength and Rockwell B70 hardness, providing dependable fastening under heavy loads.
- Precise and secure fit due to Class 2A thread fit and UNC coarse threading, enabling quick assembly and reduced risk of cross-threading.
- Flush surface installation with a standard flat head profile and 82° countersink angle, ideal for applications requiring a smooth, unobtrusive finish.
- Efficient drive engagement using a Phillips No. 4 drive, offering good torque transfer and ease of use with standard tools.
- Full threading along the 1 3/4" length ensures maximum grip and holding power across the entire fastener.
- Regulatory compliance with ASME B18.6.3, RoHS 3, and REACH, guaranteeing safety and environmental standards for global industrial use.
Professional Applications & Engineering Value
These zinc-plated steel flat head screws are engineered to address critical industrial fastening challenges, such as vibration resistance and environmental exposure. The UNC coarse thread and Class 2A fit provide excellent engagement in a variety of materials, reducing installation time and improving reliability in assembly lines. With a fully threaded design and 82° countersink angle, they ensure a flush mount in metal, wood, or composite applications, preventing snagging and maintaining aerodynamic or aesthetic surfaces. The Phillips drive facilitates efficient torque application, making these screws ideal for machinery, automotive, and construction sectors where durability and compliance with ASME B18.6.3 standards are paramount.
Specification Summary & Compliance
This product features precise Class 2A thread fit and UNC coarse thread spacing in an inch system, ensuring dimensional accuracy for reliable performance. Manufactured in compliance with ASME B18.6.3 specifications, it also meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, affirming its suitability for environmentally conscious and safe industrial use worldwide.
