S-94054A219 1/4"-20 x 3 1/2" Wood Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling with integrated self-drilling tip and cutting wings, saving labor time and reducing installation steps in sheet metal and wood applications.
• Superior corrosion resistance from the zinc plating on steel, ensuring long-term durability and reliability in various environmental conditions.
• Maximum holding power achieved through the fully threaded UNC coarse thread design, providing excellent pull-out resistance in materials up to 2.5" thick.
• Streamlined installation with the Phillips No. 3 drive and flat head, allowing for flush mounting and efficient driving with common tools.
• Versatile material compatibility designed for use in both sheet metal (0.11"-0.375") and wood (0.75"-2.5"), reducing inventory needs for multiple projects.
• Enhanced thread formation via the thread forming tapping method, which creates strong, secure threads without generating chips in ductile materials.
• Compliance with environmental standards as RoHS 3 compliant, ensuring safe use in regulated industries and global market acceptance.

Professional Applications & Engineering Value

This heavy-duty self-drilling wood screw is engineered to address common fastening challenges in construction and fabrication. The zinc plated steel construction provides essential corrosion protection, extending service life in humid or outdoor environments. Its cutting wings and drilling tip efficiently penetrate sheet metal and wood without pilot holes, preventing material splitting and reducing assembly time. The fully threaded UNC coarse thread and thread forming design ensure high clamp load and vibration resistance, making it ideal for securing structural components, metal framing, and wooden fixtures. By integrating drilling and fastening into one step, it minimizes tool changes and enhances productivity in high-volume sheet metal and wood applications, delivering consistent performance for professional contractors and industrial assemblers.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with standard thread tolerances, a flat head with 0.472" diameter, and a 3-1/2" length for robust fastening. It complies with RoHS 3 (2015/863/EU) regulations, ensuring it is free from hazardous substances. The thread forming method and right-hand thread direction provide reliable performance in accordance with common industrial standards for self-drilling screws.