S-90086A550 1/4"-20 x 2" ASME B18.6.3, SAE J933 Tapping Screws
Tapping 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.
- Effortless installation in aluminum, brass, cast iron, and sheet metal without pre-tapped holes, thanks to the thread-cutting Type F design.
- Secure and flush fastening with a standard flat head and 82° countersink angle, providing a smooth surface finish.
- Reliable drive engagement using a Phillips No. 3 drive, reducing cam-out risk for consistent torque application.
- High-strength coarse UNC threads (1/4"-20) that enhance grip and vibration resistance in various materials.
- Full threading along the 2" length for maximum holding power and versatility in different material thicknesses.
- Compliance with ASME B18.6.3 and RoHS 3 standards, ensuring quality, safety, and environmental responsibility.
Professional Applications & Engineering Value
These 1/4"-20 zinc-plated steel tapping screws are engineered to solve common industrial fastening challenges, such as reducing assembly time and eliminating the need for separate tapping operations. The thread-cutting Type F design with coarse UNC threads allows for easy installation in tough materials like aluminum, brass, cast iron, and sheet metal, minimizing thread stripping and improving joint integrity. The Phillips flat head ensures a secure, low-profile fit, ideal for applications where surface smoothness is critical. Made from durable zinc-plated steel, these screws offer excellent corrosion resistance, making them suitable for outdoor or harsh environment use in automotive, machinery, and construction sectors, while adhering to strict industry standards for reliability.
Specification Summary & Compliance
This product features precise dimensions, including a 1/4"-20 UNC coarse thread with standard Class 2A tolerances for consistent performance. It complies with ASME B18.6.3 specifications and is RoHS 3 (2015/863/EU) compliant, ensuring it meets rigorous engineering and environmental standards for industrial fasteners.
