S-90096A445 3/8"-16 x 1 1/4" ASME B18.6.3, SAE J933 Tapping Screws
Tapping Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc-plated steel construction, extending service life in demanding industrial environments.
- High-strength, self-tapping performance with Thread Cutting Type F design, eliminating the need for pre-tapped holes in materials like aluminum and cast iron.
- Secure, vibration-resistant fastening achieved through serrated locking under the flange, preventing loosening under dynamic loads.
- Efficient installation and high torque capability provided by the external hex drive and flanged head, which also acts as an integrated washer.
- Excellent material compatibility with coarse UNC threads and blunt tip, optimized for use in aluminum, brass, cast iron, and sheet metal.
- Reliable full-thread engagement along the 1 1/4" length, ensuring maximum holding power and pull-out resistance.
- Streamlined assembly process with precise R drill bit (0.339") compatibility, reducing preparation time and errors.
Professional Applications & Engineering Value
This heavy-duty flanged tapping screw is engineered to solve critical fastening challenges in metalworking and fabrication. The zinc-plated steel provides a durable barrier against rust, essential for machinery and outdoor equipment. Its Thread Cutting Type F design and coarse 3/8"-16 UNC thread enable it to form strong, precise threads directly in ductile materials like aluminum, brass, and cast iron, as well as sheet metal, eliminating the cost and complexity of separate tapping operations. The combination of an external hex drive for high-torque application and serrations for locking ensures a vibration-proof connection, making it ideal for automotive assemblies, electrical enclosures, and structural frames where reliability is non-negotiable.
Specification Summary & Compliance
This screw features a 3/8"-16 UNC coarse thread with standard Class 2A tolerances, is fully threaded, and has a length of 1 1/4". It is manufactured in compliance with the ASME B18.6.3 standard (SAE J933) for dimensional and mechanical consistency. The product is also RoHS 3 (2015/863/EU) Compliant, ensuring it is free from hazardous substances for use in regulated markets.
