S-94195A426 Length 3 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling with integrated No. 3 drill tip, cutting labor time and costs by drilling and tapping in one step.
• Superior corrosion resistance thanks to 410 Stainless Steel construction, ideal for harsh or outdoor industrial environments.
• Enhanced holding power from thread forming (BSD) design, creating strong, vibration-resistant threads in steel and sheet metal.
• Flush, professional finish ensured by the 82° countersink angle and flat head, preventing snagging and improving safety.
• High-strength fastening for materials up to 0.14" thick, providing reliable performance in demanding steel and stainless steel applications.
• Optimized drive engagement with Phillips No. 3 drive, reducing cam-out and enabling efficient installation with standard tools.
• Full 3-1/2" thread coverage ensures maximum grip and load distribution along the entire fastener length.

Professional Applications & Engineering Value

These self-drilling tapping screws are precision-engineered to address common industrial challenges like time-consuming pre-drilling and thread failure in thin materials. The 410 Stainless Steel material offers excellent durability and rust resistance, making them suitable for construction, HVAC, and metal fabrication where exposure to moisture is a concern. The specialized No. 3 drill tip and thread forming (BSD) technology work together to drill a clean hole and form strong, tight threads in steel, stainless steel, and sheet metal, reducing the risk of stripping and improving joint integrity. The Phillips flat head design allows for a smooth, flush installation, minimizing protrusions in assembled products. This combination of features streamlines assembly processes, lowers total installed cost, and enhances the reliability of fastening in critical industrial applications.

Specification Summary & Compliance

This screw meets standard dimensional requirements with a thread diameter of 0.216" and 14 threads per inch, conforming to common BSD tapping screw specifications. The fully threaded design and right-hand threads ensure consistent performance. Manufactured from 410 Stainless Steel, it is designed for reliability in various industrial settings. While specific compliance certifications are not provided, the product is produced to industry standards for self-drilling screws used in metal fastening.