S-90203A529 Length 3/4" Tapping Screws

Key Features & Benefits at a Glance

• Eliminates pre-drilling requirements with integrated No. 3 drill tip, saving significant labor time and tooling costs in steel and sheet metal assembly.
• Superior corrosion resistance provided by 410 Stainless Steel material, ensuring long-term reliability in demanding industrial environments.
• Creates strong, permanent threads through the BSD thread forming action, which displaces material for a secure, vibration-resistant fit without chips.
• High-torque driving capability with the square drive and pan head design, preventing cam-out and allowing for efficient installation with compatible tools.
• Optimized for 0.21" maximum material thickness, making these screws ideal for standard gauge sheet metal and light steel fabrication work.
• Full threading along the 3/4" length ensures maximum grip and holding power throughout the entire fastened joint.
• Compliant with major environmental regulations including RoHS 3 and REACH, making them suitable for global supply chains and regulated industries.

Professional Applications & Engineering Value

These No. 14 self-drilling screws are engineered to solve critical efficiency challenges in metalworking and construction. The 410 Stainless Steel construction provides the necessary hardness for the drill tip to penetrate steel, stainless steel, and sheet metal without pilot holes, drastically reducing assembly steps. The BSD thread forming design is particularly valuable as it cold-forms mating threads, creating a tighter fit with higher strip-to-drive ratios and superior resistance to vibrational loosening compared to cut threads. This combination of self-drilling and thread forming capabilities makes them a robust, one-step fastening solution for HVAC ductwork, metal building panels, and electrical enclosures, where speed, strength, and durability are paramount.

Specification Summary & Compliance

This fastener features a No. 14 screw size with a 3/4" length and is fully threaded. The thread diameter is 0.242" with approximately 14 threads per inch. It incorporates a pan head with a square drive (No. 3 size) and a standard rounded profile. The screw is manufactured for thread forming applications and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.