S-90390A129 3/8"-16 x 1" Tapping Screws

Key Features & Benefits at a Glance

• Enhanced corrosion resistance with black-phosphate steel coating, extending service life in demanding industrial environments.
• Superior torque transmission and reduced cam-out thanks to the T40 Torx drive, ensuring secure installation and minimizing tool slippage.
• Efficient thread cutting in various metals including aluminum, brass, cast iron, and sheet metal with the Type F tapping screw design for strong, reliable threads.
• Optimal flush mounting provided by the standard flat head with an 82° countersink angle for a clean, professional finish.
• Simplified installation process using a standard T drill bit (0.358" diameter), reducing preparation time and errors.
• High holding power in coarse-threaded applications with 3/8"-16 UNC fully threaded design, ideal for materials requiring robust fastening.
• Durable, all-metal engagement from the blunt tip and right-hand threading, ensuring consistent performance in repetitive assembly tasks.

Professional Applications & Engineering Value

These 3/8"-16 UNC flat head tapping screws are engineered to solve common challenges in metal fabrication and assembly, such as stripping and poor thread formation. The black-phosphate steel construction provides a protective layer against rust, crucial for applications in machinery, automotive, and construction where exposure to elements is frequent. The T40 Torx drive offers higher torque capability compared to standard drives, reducing the risk of fastener failure during installation in materials like aluminum, brass, cast iron, and sheet metal. With a coarse thread and thread cutting design, these screws form precise threads without pre-tapping, saving time and labor in high-volume production. The fully threaded, blunt tip ensures maximum grip and vibration resistance, making them ideal for securing components in dynamic environments.

Specification Summary & Compliance

These screws adhere to UNC thread standards with a 3/8"-16 thread size and coarse spacing, ensuring compatibility with common industrial specifications. The flat head design conforms to standard profiles with an 82° countersink angle for proper seating. Manufactured from black-phosphate coated steel, they meet general industry requirements for durability and are suitable for use with a T drill bit (0.358" diameter). While specific compliance certifications are not provided, they are produced to align with common industrial norms for thread cutting screws and may conform to RoHS and REACH guidelines upon request, supporting safe and efficient assembly operations.