S-90190A321 Length 2 1/2" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction for extended service life in demanding industrial environments
• Excellent thread-forming capability creates permanent, vibration-resistant connections in sheet metal without requiring pre-tapped holes
• Optimal driving efficiency with No. 3 Phillips drive that minimizes cam-out and provides secure installation control
• Maximum material engagement through fully threaded design that distributes load evenly across the entire fastener length
• Enhanced clamping force with pan head design that provides a larger bearing surface for secure sheet metal fastening
• Precision thread geometry with 10 threads per inch ensuring reliable performance in standard sheet metal thicknesses
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for global industrial applications

Professional Applications & Engineering Value

These No. 14 tapping screws are specifically engineered for sheet metal applications where reliable fastening is critical. The thread forming technology eliminates the need for pre-tapped holes by displacing material to create strong, permanent threads that resist vibration loosening. Manufactured from zinc-plated steel, these fasteners provide excellent corrosion protection while maintaining high tensile strength. The Phillips drive system ensures efficient installation with reduced cam-out, and the fully threaded design maximizes pull-out resistance across the entire 2-1/2" length. Ideal for HVAC systems, electrical enclosures, automotive components, and industrial machinery where sheet metal fastening demands durability and performance under stress conditions.

Specification Summary & Compliance

These thread forming tapping screws feature precision Class 2A thread tolerances with 0.242" thread diameter and 10 threads per inch. The A/AB tapping screw type conforms to industry standards for sheet metal applications. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmentally responsible production. The zinc-plated surface treatment provides consistent corrosion protection, while the pointed tip design facilitates easy starting in pre-drilled 5.5 mm (0.2165") holes for maximum drilling thickness of 0.025".