S-90420A612 Length 2" Tapping Screws

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Galvanic-barrier coated 18-8 stainless steel construction prevents galvanic corrosion, extending service life in harsh industrial environments.
• Superior Drilling Efficiency: Integrated 35/64" drill tip enables self-drilling into steel, stainless steel, and sheet metal up to 1/2" thick, reducing installation time and pre-drilling needs.
• High-Torque Fastening: External hex drive and hex head design provide excellent grip for high-torque applications, ensuring secure and reliable fastening.
• Optimized Thread Engagement: UNC coarse threads and thread forming tapping method create strong, vibration-resistant connections in metal substrates.
• Increased Load Distribution: Flanged design spreads clamping force over a wider area (0.432" flange diameter), minimizing material stress and pull-through.
• Full Thread Coverage: Fully threaded 2" length maximizes grip range and adjustment flexibility in various material thicknesses.
• Regulatory Compliance: Meets RoHS 3 and REACH standards, ensuring safe, environmentally responsible use in global industrial supply chains.

Professional Applications & Engineering Value

These No. 12-14 UNC flanged tapping screws deliver exceptional value in metal fabrication and assembly operations. The galvanic-barrier coated 18-8 stainless steel material effectively counters galvanic corrosion when joining dissimilar metals, a common challenge in mixed-material structures. The thread forming design with UNC coarse threads displaces material rather than cutting it, producing stronger threads with reduced risk of loosening under vibration in steel, stainless steel, and sheet metal applications. The combination of a self-drilling tip and external hex drive streamlines installation in tight spaces, eliminating separate drilling steps and reducing labor costs. This makes them ideal for HVAC systems, electrical enclosures, and automotive assemblies where speed, durability, and corrosion resistance are critical.

Specification Summary & Compliance

This screw features a No. 12 size with 0.216" UNC coarse thread diameter and 14 threads per inch, conforming to standard inch-series tolerances. The thread forming (CSD type) tapping method ensures consistent performance in metal fastening. Manufacturing and material compliance include RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing adherence to environmental and safety standards for industrial components.