S-90628A323 12-24 x 1 1/4" Tapping Screws

Key Features & Benefits at a Glance

• Corrosion-resistant coated steel construction ensures long-term durability and reliable performance in harsh industrial environments.
• Integrated sealing washer (steel/rubber) provides a secure, weather-resistant seal, preventing moisture and contaminant ingress.
• Self-drilling tip (No. 4.5) with a 1/2" length eliminates the need for pre-drilling, saving time and labor costs in steel and sheet metal applications.
• Thread forming (CSD) design with UNC coarse threads creates strong, permanent threads in ductile materials, reducing the risk of stripping.
• External hex drive and hex head allow for high-torque installation with standard tools, ensuring a tight, secure fastening.
• Fully threaded 1-1/4" length provides maximum grip and holding power across the entire fastener engagement.
• RoHS 3 compliance meets stringent environmental regulations, making them suitable for use in regulated industries and global supply chains.

Professional Applications & Engineering Value

These 12-24 UNC thread forming tapping screws are engineered to solve critical fastening challenges in steel and sheet metal assemblies. The corrosion-resistant coated steel material combats rust and degradation, extending service life in demanding conditions. The thread forming (CSD) tapping method displaces material to create robust, high-strength threads without generating chips, which is ideal for applications where debris contamination is a concern. Combined with the sealing washer, this design provides a dual function of secure mechanical fastening and environmental sealing, protecting joints from moisture and corrosion. The self-drilling tip further enhances efficiency by integrating drilling and tapping into a single operation, significantly reducing assembly time and cost in industrial manufacturing, HVAC, and metal fabrication projects.

Specification Summary & Compliance

This screw features a No. 12 size with a 12-24 UNC coarse thread and is fully threaded. It adheres to standard dimensional tolerances for inch fasteners. The product is manufactured to be RoHS 3 (2015/863/EU) Compliant, ensuring it is free from hazardous substances and suitable for use in regulated markets and environmentally conscious applications.