S-90066A323 Length 3" Tapping Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, ensuring long-term durability in harsh industrial environments.
• High-strength thread forming design creates secure, vibration-resistant threads in sheet metal without pre-tapping, reducing installation time and tooling costs.
• Integrated steel/rubber flat washer (5/8" OD) distributes load evenly, prevents surface damage, and provides enhanced sealing against moisture and dust.
• External hex drive with 3/8" head width allows for high-torque application using standard tools, ensuring tight, reliable fastening in confined spaces.
• Fully threaded, pointed tip enables quick starts and smooth penetration into 0.025" maximum thickness materials, improving assembly efficiency.
• Compatible with standard 5.5mm drill bits, simplifying hole preparation and reducing the need for specialized equipment in sheet metal workshops.
• Right-hand A/AB thread standard ensures consistent performance and interchangeability with industry-accepted fastener systems.

Professional Applications & Engineering Value

These No. 14 x 3" zinc-plated steel hex washer tapping screws are engineered to address common challenges in sheet metal fabrication, such as material splitting and loose fasteners under dynamic loads. The thread forming tapping method displaces metal to create strong, precise internal threads without generating chips, eliminating cleanup and improving joint integrity. The combination of a flat steel/rubber washer and fully threaded shank provides consistent clamping force and resistance to vibration loosening, making these external hex drive screws ideal for HVAC systems, electrical enclosures, and automotive panels where reliability is critical. Their pointed tip and specified drill bit compatibility streamline high-volume production lines, reducing assembly errors and downtime.

Specification Summary & Compliance

This product adheres to inch system measurements with a No. 14 thread diameter (0.242") and 10 threads per inch, conforming to standard A/AB tapping screw specifications for consistent fit. The zinc-plated steel material and steel/rubber washer assembly meet industry requirements for corrosion protection and load distribution. Manufacturing follows recognized standards for thread forming screws, ensuring dimensional accuracy and performance in sheet metal applications up to 0.025" thickness. Complies with common industrial safety and material regulations, supporting reliable use in professional settings.