S-90087A881 12-24 x 5/8" 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, extending service life in demanding industrial environments.
- Efficient self-tapping installation with Type F thread cutting design, eliminating the need for pre-tapped holes and reducing assembly time.
- High-strength fastening in coarse UNC threading ensures robust, vibration-resistant connections in materials like aluminum, brass, and cast iron.
- Optimized drive engagement via No. 3 Phillips head, providing reliable torque transfer and reducing the risk of cam-out during installation.
- Versatile material compatibility for use in sheet metal, aluminum, brass, and cast iron, offering broad application flexibility.
- Full-length threading maximizes grip and load distribution along the entire 5/8" length for enhanced joint integrity.
- Streamlined installation process with precise No. 11 drill bit pairing and blunt tip design for accurate alignment and reduced material stress.
Professional Applications & Engineering Value
These 12-24 UNC thread cutting tapping screws are engineered to address common challenges in metalworking and assembly, such as stripped threads and time-consuming pre-tapping. The zinc-plated steel material provides a durable barrier against rust, ideal for HVAC, automotive, and machinery applications where environmental exposure is a concern. The coarse thread and Type F tapping design enable quick, secure fastening in aluminum, brass, cast iron, and sheet metal, reducing the risk of material fatigue. By integrating a No. 3 Phillips drive and fully threaded shank, these screws ensure consistent clamping force and simplify high-volume production lines, enhancing overall assembly efficiency and reliability.
Specification Summary & Compliance
This product adheres to UNC coarse thread standards with a size of 12-24 and a length of 5/8". It features a Class 2A thread fit for general applications and complies with ASME B18.6.3 and SAE J933 specifications, ensuring dimensional accuracy and performance reliability. The screws are designed for use with a No. 11 drill bit (0.191" diameter) and include a right-hand thread, pan head style, and blunt tip for precise installation. Materials and processes conform to industry standards for quality and safety.
